Common Weakness Enumeration

CWE-347

Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

CVE-2025-64186 (GCVE-0-2025-64186)

Vulnerability from cvelistv5 – Published: 2025-11-12 20:34 – Updated: 2025-11-14 17:40
VLAI
Title
Evervault Go SDK: Incomplete PCR Validation in Enclave Attestation for non-Evervault hosted Enclaves
Summary
Evervault is a payment security solution. A vulnerability was identified in the `evervault-go` SDK’s attestation verification logic in versions of `evervault-go` prior to 1.3.2 that may allow incomplete documents to pass validation. This may cause the client to trust an enclave operator that does not meet expected integrity guarantees. The exploitability of this issue is limited in Evervault-hosted environments as an attacker would require the pre-requisite ability to serve requests from specific evervault domain names, following from our ACME challenge based TLS certificate acquisition pipeline. The vulnerability primarily affects applications which only check PCR8. Though the efficacy is also reduced for applications that check all PCR values, the impact is largely remediated by checking PCR 0, 1 and 2. The identified issue has been addressed in version 1.3.2 by validating attestation documents before storing in the cache, and replacing the naive equality checks with a new SatisfiedBy check. Those who useevervault-go to attest Enclaves that are hosted outside of Evervault environments and cannot upgrade have two possible workarounds available. Modify the application logic to fail verification if PCR8 is not explicitly present and non-empty and/or add custom pre-validation to reject documents that omit any required PCRs.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
evervault evervault-go Affected: < 1.3.2
Create a notification for this product.
Show details on NVD website

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CVE-2025-64740 (GCVE-0-2025-64740)

Vulnerability from cvelistv5 – Published: 2025-11-13 14:35 – Updated: 2026-02-26 16:57
VLAI
Title
Zoom Workplace VDI Client for Windows - Improper Verification of Cryptographic Signature
Summary
Improper verification of cryptographic signature in the installer for Zoom Workplace VDI Client for Windows may allow an authenticated user to conduct an escalation of privilege via local access.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Date Public
2025-11-11 13:00
Show details on NVD website

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CVE-2025-64786 (GCVE-0-2025-64786)

Vulnerability from cvelistv5 – Published: 2025-12-09 20:21 – Updated: 2026-04-28 02:23
VLAI
Title
Acrobat Reader | Improper Verification of Cryptographic Signature (CWE-347)
Summary
Acrobat Reader versions 24.001.30264, 20.005.30793, 25.001.20982, 24.001.30273, 20.005.30803 and earlier are affected by an Improper Verification of Cryptographic Signature vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to gain limited unauthorized write access. Exploitation of this issue requires user interaction with a cryptographic signature.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature (CWE-347)
Assigner
References
Impacted products
Vendor Product Version
Adobe Acrobat Reader Affected: 0 , ≤ 20.005.30803 (semver)
Create a notification for this product.
Date Public
2025-12-09 17:00
Show details on NVD website

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CVE-2025-64787 (GCVE-0-2025-64787)

Vulnerability from cvelistv5 – Published: 2025-12-09 20:21 – Updated: 2026-04-28 02:23
VLAI
Title
Acrobat Reader | Improper Verification of Cryptographic Signature (CWE-347)
Summary
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SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature (CWE-347)
Assigner
References
Impacted products
Vendor Product Version
Adobe Acrobat Reader Affected: 0 , ≤ 20.005.30803 (semver)
Create a notification for this product.
Date Public
2025-12-09 17:00
Show details on NVD website

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CVE-2025-65945 (GCVE-0-2025-65945)

Vulnerability from cvelistv5 – Published: 2025-12-04 18:45 – Updated: 2025-12-05 18:31
VLAI
Title
auth0/node-jws improper HMAC signature verification vulnerability
Summary
auth0/node-jws is a JSON Web Signature implementation for Node.js. In versions 3.2.2 and earlier and version 4.0.0, auth0/node-jws has an improper signature verification vulnerability when using the HS256 algorithm under specific conditions. Applications are affected when they use the jws.createVerify() function for HMAC algorithms and use user-provided data from the JSON Web Signature protected header or payload in HMAC secret lookup routines, which can allow attackers to bypass signature verification. This issue has been patched in versions 3.2.3 and 4.0.1.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
auth0 node-jws Affected: < 3.2.3
Affected: >= 4.0.0, <= 4.0.1
Create a notification for this product.
Show details on NVD website

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CVE-2025-66567 (GCVE-0-2025-66567)

Vulnerability from cvelistv5 – Published: 2025-12-09 01:55 – Updated: 2025-12-09 16:02
VLAI
Title
ruby-saml has a SAML authentication bypass due to namespace handling (parser differential)
Summary
The ruby-saml library is for implementing the client side of a SAML authorization. ruby-saml versions up to and including 1.12.4 contain an authentication bypass vulnerability due to an incomplete fix for CVE-2025-25292. ReXML and Nokogiri parse XML differently, generating entirely different document structures from the same input. This allows an attacker to execute a Signature Wrapping attack. This issue is fixed in version 1.18.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
SAML-Toolkits ruby-saml Affected: < 1.18.0
Create a notification for this product.
Show details on NVD website

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CVE-2025-66568 (GCVE-0-2025-66568)

Vulnerability from cvelistv5 – Published: 2025-12-09 02:03 – Updated: 2025-12-09 16:02
VLAI
Title
ruby-saml Libxml2 Canonicalization errors can bypass Digest/Signature validation
Summary
The ruby-saml library implements the client side of an SAML authorization. Versions up to and including 1.12.4, are vulnerable to authentication bypass through the libxml2 canonicalization process used by Nokogiri for document transformation, which allows an attacker to execute a Signature Wrapping attack. When libxml2’s canonicalization is invoked on an invalid XML input, it may return an empty string rather than a canonicalized node. ruby-saml then proceeds to compute the DigestValue over this empty string, treating it as if canonicalization succeeded. This issue is fixed in version 1.18.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
SAML-Toolkits ruby-saml Affected: < 1.18.0
Create a notification for this product.
Show details on NVD website

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CVE-2025-68113 (GCVE-0-2025-68113)

Vulnerability from cvelistv5 – Published: 2025-12-16 00:53 – Updated: 2025-12-16 21:14
VLAI
Title
ALTCHA Proof-of-Work Vulnerable to Challenge Splicing and Replay
Summary
ALTCHA is privacy-first software for captcha and bot protection. A cryptographic semantic binding flaw in ALTCHA libraries allows challenge payload splicing, which may enable replay attacks. The HMAC signature does not unambiguously bind challenge parameters to the nonce, allowing an attacker to reinterpret a valid proof-of-work submission with a modified expiration value. This may allow previously solved challenges to be reused beyond their intended lifetime, depending on server-side replay handling and deployment assumptions. The vulnerability primarily impacts abuse-prevention mechanisms such as rate limiting and bot mitigation. It does not directly affect data confidentiality or integrity. This issue has been addressed by enforcing explicit semantic separation between challenge parameters and the nonce during HMAC computation. Users are advised to upgrade to patched versions, which include version 1.0.0 of the altcha Golang package, version 1.0.0 of the altcha Rubygem, version 1.0.0 of the altcha pip package, version 1.0.0 of the altcha Erlang package, version 1.4.1 of the altcha-lib npm package, version 1.3.1 of the altcha-org/altcha Composer package, and version 1.3.0 of the org.altcha:altcha Maven package. As a mitigation, implementations may append a delimiter to the end of the `salt` value prior to HMAC computation (for example, `<salt>?expires=<time>&`). This prevents ambiguity between parameters and the nonce and is backward-compatible with existing implementations, as the delimiter is treated as a standard URL parameter separator.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-115 - Misinterpretation of Input
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
altcha-org altcha-lib Affected: < 1.4.1
Create a notification for this product.
Show details on NVD website

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CVE-2025-68925 (GCVE-0-2025-68925)

Vulnerability from cvelistv5 – Published: 2026-01-13 19:30 – Updated: 2026-01-13 19:53
VLAI
Title
Jervis has a JWT Algorithm Confusion Vulnerability
Summary
Jervis is a library for Job DSL plugin scripts and shared Jenkins pipeline libraries. Prior to 2.2, the code doesn't validate that the JWT header specifies "alg":"RS256". This vulnerability is fixed in 2.2.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
samrocketman jervis Affected: < 2.2
Create a notification for this product.
Show details on NVD website

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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.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Impacted products
Vendor Product Version
GnuPG GnuPG Affected: 0 , ≤ 2.4.8 (semver)
Create a notification for this product.
Show details on NVD website

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No mitigation information available for this CWE.

CAPEC-463: Padding Oracle Crypto Attack

An adversary is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an adversary is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an adversary is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key.

CAPEC-475: Signature Spoofing by Improper Validation

An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.

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