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114 vulnerabilities by GnuPG
CVE-2026-57062 (GCVE-0-2026-57062)
Vulnerability from nvd – Published: 2026-06-23 17:26 – Updated: 2026-06-23 17:35
VLAI
Summary
CMS (Cryptographic Message Syntax) parsing in gpgsm in GnuPG through 2.5.20 mishandles the CMS format for AES-GCM because aes-ICVlen is supposed to be 12 bytes but 4 bytes is accepted. NOTE: this is related to CVE-2026-34182.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
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CVE-2026-41990 (GCVE-0-2026-41990)
Vulnerability from nvd – Published: 2026-04-23 04:39 – Updated: 2026-04-23 16:22
VLAI
Summary
Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
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CVE-2026-41989 (GCVE-0-2026-41989)
Vulnerability from nvd – Published: 2026-04-23 04:30 – Updated: 2026-04-23 16:22
VLAI
Summary
Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
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CVE-2026-24883 (GCVE-0-2026-24883)
Vulnerability from nvd – Published: 2026-01-27 18:43 – Updated: 2026-01-28 15:52
VLAI
Summary
In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (application crash).
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
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CVE-2026-24882 (GCVE-0-2026-24882)
Vulnerability from nvd – Published: 2026-01-27 18:40 – Updated: 2026-06-30 12:06
VLAI
Summary
In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the PKDECRYPT command for TPM-backed RSA and ECC keys.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2026/… | |
| https://dev.gnupg.org/T8045 | |
| https://access.redhat.com/security/cve/CVE-2026-24882 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433464 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:2753 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2719 | vendor-advisoryx_refsource_REDHAT |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| GnuPG | GnuPG |
Affected:
0 , < 2.5.17
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
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CVE-2026-24881 (GCVE-0-2026-24881)
Vulnerability from nvd – Published: 2026-01-27 18:36 – Updated: 2026-06-30 12:06
VLAI
Summary
In GnuPG before 2.5.17, a crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped session key can cause a stack-based buffer overflow in gpg-agent during PKDECRYPT--kem=CMS handling. This can easily be leveraged for denial of service; however, there is also memory corruption that could lead to remote code execution.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2026/… | |
| https://dev.gnupg.org/T8044 | |
| https://access.redhat.com/security/cve/CVE-2026-24881 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433480 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| GnuPG | GnuPG |
Affected:
2.5.13 , < 2.5.17
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
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CVE-2025-68973 (GCVE-0-2025-68973)
Vulnerability from nvd – Published: 2025-12-28 16:19 – Updated: 2026-04-30 03:55
VLAI
Summary
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-675 - Multiple Operations on Resource in Single-Operation Context
Assigner
References
9 references
Impacted products
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CVE-2025-68972 (GCVE-0-2025-68972)
Vulnerability from nvd – Published: 2025-12-27 22:52 – Updated: 2026-01-02 20:44
VLAI
Summary
In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds (although an "invalid armor" message is printed during verification). This is related to use of \f as a marker to denote truncation of a long plaintext line.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
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CVE-2025-30258 (GCVE-0-2025-30258)
Vulnerability from nvd – Published: 2025-03-19 00:00 – Updated: 2025-03-19 20:49
VLAI
Summary
In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
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CVE-2022-3219 (GCVE-0-2022-3219)
Vulnerability from nvd – Published: 2023-02-23 00:00 – Updated: 2025-03-12 20:45
VLAI
Summary
GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- denial of service
- CWE-787 - Out-of-bounds Write
Assigner
References
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CVE-2022-3515 (GCVE-0-2022-3515)
Vulnerability from nvd – Published: 2023-01-12 00:00 – Updated: 2025-04-08 15:48
VLAI
Summary
A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for code execution on the target system by passing specially crafted data to the application, for example, a malicious S/MIME attachment.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
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CVE-2022-47629 (GCVE-0-2022-47629)
Vulnerability from nvd – Published: 2022-12-20 00:00 – Updated: 2025-04-16 17:35
VLAI
Summary
Libksba before 1.6.3 is prone to an integer overflow vulnerability in the CRL signature parser.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
6 references
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CVE-2022-34903 (GCVE-0-2022-34903)
Vulnerability from nvd – Published: 2022-07-01 21:05 – Updated: 2024-08-03 09:22
VLAI
Summary
GnuPG through 2.3.6, in unusual situations where an attacker possesses any secret-key information from a victim's keyring and other constraints (e.g., use of GPGME) are met, allows signature forgery via injection into the status line.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2022/… | x_refsource_MISC |
| https://bugs.debian.org/1014157 | x_refsource_MISC |
| https://dev.gnupg.org/T6027 | x_refsource_MISC |
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CVE-2021-40528 (GCVE-0-2021-40528)
Vulnerability from nvd – Published: 2021-09-06 00:00 – Updated: 2025-06-09 15:13
VLAI
Summary
The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
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CVE-2026-57062 (GCVE-0-2026-57062)
Vulnerability from cvelistv5 – Published: 2026-06-23 17:26 – Updated: 2026-06-23 17:35
VLAI
Summary
CMS (Cryptographic Message Syntax) parsing in gpgsm in GnuPG through 2.5.20 mishandles the CMS format for AES-GCM because aes-ICVlen is supposed to be 12 bytes but 4 bytes is accepted. NOTE: this is related to CVE-2026-34182.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
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CVE-2026-41990 (GCVE-0-2026-41990)
Vulnerability from cvelistv5 – Published: 2026-04-23 04:39 – Updated: 2026-04-23 16:22
VLAI
Summary
Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
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CVE-2026-41989 (GCVE-0-2026-41989)
Vulnerability from cvelistv5 – Published: 2026-04-23 04:30 – Updated: 2026-04-23 16:22
VLAI
Summary
Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
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CVE-2026-24883 (GCVE-0-2026-24883)
Vulnerability from cvelistv5 – Published: 2026-01-27 18:43 – Updated: 2026-01-28 15:52
VLAI
Summary
In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (application crash).
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
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CVE-2026-24882 (GCVE-0-2026-24882)
Vulnerability from cvelistv5 – Published: 2026-01-27 18:40 – Updated: 2026-06-30 12:06
VLAI
Summary
In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the PKDECRYPT command for TPM-backed RSA and ECC keys.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2026/… | |
| https://dev.gnupg.org/T8045 | |
| https://access.redhat.com/security/cve/CVE-2026-24882 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433464 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:2753 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2719 | vendor-advisoryx_refsource_REDHAT |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| GnuPG | GnuPG |
Affected:
0 , < 2.5.17
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
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CVE-2026-24881 (GCVE-0-2026-24881)
Vulnerability from cvelistv5 – Published: 2026-01-27 18:36 – Updated: 2026-06-30 12:06
VLAI
Summary
In GnuPG before 2.5.17, a crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped session key can cause a stack-based buffer overflow in gpg-agent during PKDECRYPT--kem=CMS handling. This can easily be leveraged for denial of service; however, there is also memory corruption that could lead to remote code execution.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2026/… | |
| https://dev.gnupg.org/T8044 | |
| https://access.redhat.com/security/cve/CVE-2026-24881 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433480 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| GnuPG | GnuPG |
Affected:
2.5.13 , < 2.5.17
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
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CVE-2025-68973 (GCVE-0-2025-68973)
Vulnerability from cvelistv5 – Published: 2025-12-28 16:19 – Updated: 2026-04-30 03:55
VLAI
Summary
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-675 - Multiple Operations on Resource in Single-Operation Context
Assigner
References
9 references
Impacted products
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CVE-2025-68972 (GCVE-0-2025-68972)
Vulnerability from cvelistv5 – Published: 2025-12-27 22:52 – Updated: 2026-01-02 20:44
VLAI
Summary
In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds (although an "invalid armor" message is printed during verification). This is related to use of \f as a marker to denote truncation of a long plaintext line.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
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CVE-2025-30258 (GCVE-0-2025-30258)
Vulnerability from cvelistv5 – Published: 2025-03-19 00:00 – Updated: 2025-03-19 20:49
VLAI
Summary
In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
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CVE-2022-3219 (GCVE-0-2022-3219)
Vulnerability from cvelistv5 – Published: 2023-02-23 00:00 – Updated: 2025-03-12 20:45
VLAI
Summary
GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- denial of service
- CWE-787 - Out-of-bounds Write
Assigner
References
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CVE-2022-3515 (GCVE-0-2022-3515)
Vulnerability from cvelistv5 – Published: 2023-01-12 00:00 – Updated: 2025-04-08 15:48
VLAI
Summary
A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for code execution on the target system by passing specially crafted data to the application, for example, a malicious S/MIME attachment.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
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CVE-2022-47629 (GCVE-0-2022-47629)
Vulnerability from cvelistv5 – Published: 2022-12-20 00:00 – Updated: 2025-04-16 17:35
VLAI
Summary
Libksba before 1.6.3 is prone to an integer overflow vulnerability in the CRL signature parser.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
6 references
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CVE-2022-34903 (GCVE-0-2022-34903)
Vulnerability from cvelistv5 – Published: 2022-07-01 21:05 – Updated: 2024-08-03 09:22
VLAI
Summary
GnuPG through 2.3.6, in unusual situations where an attacker possesses any secret-key information from a victim's keyring and other constraints (e.g., use of GPGME) are met, allows signature forgery via injection into the status line.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2022/… | x_refsource_MISC |
| https://bugs.debian.org/1014157 | x_refsource_MISC |
| https://dev.gnupg.org/T6027 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/07/02/1 | mailing-listx_refsource_MLIST |
| https://www.debian.org/security/2022/dsa-5174 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.netapp.com/advisory/ntap-2022082… | x_refsource_CONFIRM |
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CVE-2021-40528 (GCVE-0-2021-40528)
Vulnerability from cvelistv5 – Published: 2021-09-06 00:00 – Updated: 2025-06-09 15:13
VLAI
Summary
The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
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GCVE-1-2026-0008
Vulnerability from gna-1 – Published: 2026-01-28 13:48 – Updated: 2026-01-28 13:48
VLAI
Title
gpg-agent stack buffer overflow in pkdecrypt using KEM
Summary
A crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped
session key (AES Key Wrap ciphertext) can cause a stack buffer overflow in
gpg-agent during PKDECRYPT --kem=CMS handling. The root cause is an
unbounded session key length derived from attacker-controlled ciphertext
and used as the AES Key Wrap output length when decrypting into a
fixed-size stack buffer. libgcrypt’s AES-KW unwrap copies
attacker-controlled bytes into the caller-provided output buffer before
performing integrity checks, so the stack overflow occurs even if later CMS
or key-wrap integrity validation fails.
Severity
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://dev.gnupg.org/T8044 | issue-tracking |
Credits
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GCVE-1-2026-0001
Vulnerability from gna-1 – Published: 2026-01-02 10:20 – Updated: 2026-01-02 13:31
VLAI
Title
Bundle reference to gpg.fail
Summary
Reference to the gpg.fail
1. Multiple Plaintext Attack on Detached PGP Signatures in GnuPG - https://gpg.fail/detached
2. GnuPG Accepts Path Separators and Path Traversals in Literal Data "Filename" Field - https://gpg.fail/filename
3. Cleartext Signature Plaintext Truncated for Hash Calculation - https://gpg.fail/formfeed
4. Encrypted message malleability checks are incorrectly enforced causing plaintext recovery attacks - https://gpg.fail/malleability
5. Memory Corruption in ASCII-Armor Parsing - https://gpg.fail/memcpy
6. Trusted comment injection (minisign) - https://gpg.fail/minisign
7. Cleartext Signature Forgery in the NotDashEscaped header implementation in GnuPG - https://gpg.fail/notdash
8. OpenPGP Cleartext Signature Framework Susceptible to Format Confusion - https://gpg.fail/notsoclear
9. GnuPG Output Fails To Distinguish Signature Verification Success From Message Content https://gpg.fail/noverify
10. Cleartext Signature Forgery in GnuPG - https://gpg.fail/nullbyte
11. Radix64 Line-Truncation Enabling Polyglot Attacks - https://gpg.fail/polyglot
12. GnuPG may downgrade digest algorithm to SHA1 during key signature checking - https://gpg.fail/sha1
13. GnuPG Trust Packet Parsing Enables Adding Arbitrary Subkeys - https://gpg.fail/trust
14. Trusted comment Injection (minisign) - https://gpg.fail/trustcomment
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://gpg.fail/ |
Relationships
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