Common Weakness Enumeration
CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
1903 vulnerabilities reference this CWE, most recent first.
CVE-2026-50752 (GCVE-0-2026-50752)
Vulnerability from cvelistv5 – Published: 2026-06-08 11:00 – Updated: 2026-06-10 13:36
VLAI
EPSS
VEX
Title
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
Summary
A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a man-in-the-middle to bypass certificate validation in VPN site-to-site connections that use certificate-based authentication. Successful exploitation could allow interception or modification of traffic traversing the VPN tunnel.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation.
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| checkpoint | Quantum Security Gateway |
Affected:
R82.10 with Jumbo Hotfix Take 19 or below
Affected: R82 with Jumbo Hotfix Take 103 or below Affected: R81.20 with Jumbo Hotfix Take 141 or below Affected: R81.10, R81, and R80.40 |
|
| checkpoint | Spark Firewalls |
Affected:
R80.20.X, R81.10.X, and R82.00.X
|
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CVE-2026-50302 (GCVE-0-2026-50302)
Vulnerability from cvelistv5 – Published: 2026-07-14 17:06 – Updated: 2026-07-14 19:38
VLAI
EPSS
VEX
Title
Windows Cryptographic Services Security Feature Bypass Vulnerability
Summary
Improper certificate validation in Windows Cryptographic Services allows an unauthorized attacker to bypass a security feature over a network.
Severity
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7548
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7548
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.8875
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.8875
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2269
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5386
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33158
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33158
(custom)
|
Date Public
2026-07-14 14:00
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CVE-2026-49267 (GCVE-0-2026-49267)
Vulnerability from cvelistv5 – Published: 2026-06-01 07:53 – Updated: 2026-06-02 16:42
VLAI
EPSS
VEX
Title
Apache Airflow: No certificate validation on SMTP STARTTLS connections
Summary
Apache Airflow's EmailOperator and the underlying `airflow.utils.email` helpers established SMTP STARTTLS connections without verifying the remote certificate when the deployment used `[email] smtp_starttls=True` without `[email] smtp_ssl`. An attacker positioned between the worker and the configured SMTP server (network MITM — typical hostile-network attack-surface for environments where the SMTP relay sits outside the worker's trust boundary) could present a self-signed certificate, have the worker complete the STARTTLS handshake silently, and capture the SMTP AUTH credentials and message contents the worker forwarded.
This CVE covers the **core apache-airflow side** of the same root cause already covered for the SMTP provider by `CVE-2026-41016` (published 2026-04-27, covering `apache-airflow-providers-smtp`). Users who already applied the SMTP-provider fix from CVE-2026-41016 should additionally upgrade `apache-airflow` to 3.2.2 or later to cover the core-side path through `airflow.utils.email`. Affects deployments configured with `smtp_starttls=True` and `smtp_ssl=False` where the SMTP relay is reachable across a less-trusted network segment than the worker.
Users are advised to upgrade to `apache-airflow` 3.2.2 or later.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/apache/airflow/pull/65346 | patch |
| https://lists.apache.org/thread/6v2ds757000msmjmo… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Airflow |
Affected:
2.0.0 , < 3.2.2
(semver)
|
Credits
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CVE-2026-48249 (GCVE-0-2026-48249)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-05-26 11:52
VLAI
EPSS
VEX
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in rm/incs/mobile_login.inc.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in rm/incs/mobile_login.inc.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests issued during the mobile (RouteMate) login flow. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openises/tickets/releases/tag/… | release-notes |
| https://github.com/openises/tickets/commit/ecfeb4… | patch |
| https://www.vulncheck.com/advisories/open-ises-ti… | third-party-advisory |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-48248 (GCVE-0-2026-48248)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-05-26 11:52
VLAI
EPSS
VEX
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in incs/login.inc.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in incs/login.inc.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests issued during the login/authentication flow. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openises/tickets/releases/tag/… | release-notes |
| https://github.com/openises/tickets/commit/ecfeb4… | patch |
| https://www.vulncheck.com/advisories/open-ises-ti… | third-party-advisory |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-48247 (GCVE-0-2026-48247)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-05-21 18:05
VLAI
EPSS
VEX
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in incs/functions.inc.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in incs/functions.inc.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests for general-purpose outbound HTTPS requests issued by the shared helper functions. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openises/tickets/releases/tag/… | release-notes |
| https://github.com/openises/tickets/commit/ecfeb4… | patch |
| https://www.vulncheck.com/advisories/open-ises-ti… | third-party-advisory |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-48246 (GCVE-0-2026-48246)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-05-21 18:05
VLAI
EPSS
VEX
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in ajax/reports.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in ajax/reports.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests for Google Maps Directions API lookups during incident report generation. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openises/tickets/releases/tag/… | release-notes |
| https://github.com/openises/tickets/commit/ecfeb4… | patch |
| https://www.vulncheck.com/advisories/open-ises-ti… | third-party-advisory |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-47632 (GCVE-0-2026-47632)
Vulnerability from cvelistv5 – Published: 2026-07-14 17:05 – Updated: 2026-07-15 10:57
VLAI
EPSS
VEX
Title
Azure Monitor Agent Metrics Extension Elevation of Privilege Vulnerability
Summary
Improper certificate validation in Azure Monitor Agent allows an unauthorized attacker to elevate privileges over an adjacent network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure Monitor Agent Metrics Extension |
Affected:
1.0.0 , < 1.65
(custom)
|
Date Public
2026-07-14 14:00
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CVE-2026-47074 (GCVE-0-2026-47074)
Vulnerability from cvelistv5 – Published: 2026-05-28 09:05 – Updated: 2026-05-29 04:40
VLAI
EPSS
VEX
Title
ex_aws_sns SigningCertURL not validated in verify_message/1
Summary
Improper Certificate Validation vulnerability in ex-aws ex_aws_sns (ExAws.SNS, ExAws.SNS.PublicKeyCache modules) allows Signature Spoofing by Improper Validation.
This vulnerability is associated with program files lib/ex_aws/sns.ex, lib/ex_aws/sns/public_key_cache.ex and program routines 'Elixir.ExAws.SNS':verify_message/1, 'Elixir.ExAws.SNS.PublicKeyCache':get/1.
'Elixir.ExAws.SNS':verify_message/1 fetches the signing certificate from the SigningCertURL field of the incoming SNS message without validating that the URL uses HTTPS or that the host matches an AWS-owned SNS certificate domain. An unauthenticated attacker who can POST to an endpoint that calls verify_message/1 can supply an attacker-controlled SigningCertURL, sign a forged SNS message with their own key, and cause the function to return :ok, completely bypassing SNS signature verification.
This issue affects ex_aws_sns: from 2.0.1 before 2.3.5.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ex-aws/ex_aws_sns/security/adv… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-47074.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-47074 | related |
| https://github.com/ex-aws/ex_aws_sns/commit/1853d… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ex-aws | ex_aws_sns |
Affected:
2.0.1 , < 2.3.5
(semver)
cpe:2.3:a:ex_aws_sns_project:ex_aws_sns:*:*:*:*:*:*:*:* |
|
| ex-aws | ex_aws_sns |
Affected:
a7ec21880943f4dac1d59bda557db0ffcd2b61fa , < 1853d280b152d10384a1e21a22cf22152a60be48
(git)
cpe:2.3:a:ex_aws_sns_project:ex_aws_sns:*:*:*:*:*:*:*:* |
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CVE-2026-46734 (GCVE-0-2026-46734)
Vulnerability from cvelistv5 – Published: 2026-06-25 13:43 – Updated: 2026-06-26 03:55
VLAI
EPSS
VEX
Summary
Dell Display and Peripheral Manager (DDPM Mac), versions prior to 2.3, contain an Improper Certificate Validation vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Protection mechanism bypass.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-hk/00047565… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Display and Peripheral Manager |
Affected:
0 , < Version 2.3 and later
(custom)
|
Date Public
2026-06-16 06:30
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Mitigation
Architecture and Design
Implementation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation
Implementation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
CAPEC-459: Creating a Rogue Certification Authority Certificate
An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
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.