Common Weakness Enumeration
CWE-299
AllowedImproper Check for Certificate Revocation
Abstraction: Base · Status: Draft
The product does not check or incorrectly checks the revocation status of a certificate, which may cause it to use a certificate that has been compromised.
29 vulnerabilities reference this CWE, most recent first.
CVE-2026-93602 (GCVE-0-2026-93602)
Vulnerability from cvelistv5 – Published: 2026-09-18 13:20 – Updated: 2026-09-18 17:58
VLAI
EPSS
VEX
Title
rustls-webpki before 0.103.10 CRL Revocation Check Bypass
Summary
rustls-webpki versions before 0.103.10 and 0.104.0-alpha.5 contain faulty CRL authority-matching logic that compares only the first distributionPoint against each CRL's IssuingDistributionPoint, ignoring additional distributionPoints. Attackers with a compromised trusted issuing authority can present revoked certificates that pass revocation checks under UnknownStatusPolicy::Allow, or cause incorrect errors under the default deny policy.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 17:58 UTC
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rustls/webpki/security/advisor… | vendor-advisory |
| https://www.vulncheck.com/advisories/rustls-webpk… | third-party-advisory |
Impacted products
Date Public
2026-03-20 00:00
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CVE-2026-93493 (GCVE-0-2026-93493)
Vulnerability from cvelistv5 – Published: 2026-09-18 08:01 – Updated: 2026-09-18 14:41
VLAI
EPSS
VEX
Title
Io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field
Summary
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Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 14:37 UTC
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-93493 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2536897 | issue-trackingx_refsource_REDHAT |
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1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 |
cpe:/a:redhat:camel_spring_boot:4
|
Date Public
2026-09-10 00:41
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CVE-2026-86231 (GCVE-0-2026-86231)
Vulnerability from cvelistv5 – Published: 2026-09-06 22:45 – Updated: 2026-09-11 20:36 X_Open Source
VLAI
EPSS
VEX
Title
mwiede jsch KnownHosts.java getRevokedKeys improper check for certificate revocation
Summary
A security flaw has been discovered in mwiede jsch up to 2.28.5. Affected is the function getRevokedKeys of the file src/main/java/com/jcraft/jsch/KnownHosts.java. Performing a manipulation of the argument known_hosts results in improper check for certificate revocation. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is told to be difficult. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.28.6 is able to address this issue. The patch is named 194a2f76a5c0f1c3f778565be3fd66bcafc42d23. You should upgrade the affected component.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 20:04 UTC
CWE
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/399388 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/399388/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-86231 | third-party-advisory |
| https://vuldb.com/submit/898485 | third-party-advisory |
| https://github.com/mwiede/jsch/issues/1091 | exploitissue-tracking |
| https://github.com/mwiede/jsch/pull/1098 | issue-trackingpatch |
| https://github.com/mwiede/jsch/commit/194a2f76a5c… | patch |
| https://github.com/mwiede/jsch/releases/tag/jsch-2.28.6 | patch |
| https://github.com/mwiede/jsch/ | product |
Impacted products
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CVE-2026-61699 (GCVE-0-2026-61699)
Vulnerability from cvelistv5 – Published: 2026-09-04 19:43 – Updated: 2026-09-08 12:59
VLAI
EPSS
VEX
Title
nebula-mesh: Certificate revocation is never enforced at the mesh
Summary
nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. Prior to version 0.7.1, revocation is the only in-band mechanism that isolates a compromised/offboarded host from a Nebula mesh. Because the blocklist never reaches any peer's config.yml, a Blocked host retains full overlay reachability to every peer under its CA (and internal services on the mesh) for up to 30d (agent) / 365d (mobile). An attacker who exfiltrates host.key+host.crt can run stock slackhq/nebula directly, ignore the agent's 403/410 poll responses, and stay connected after the operator revokes the host. Operator-visible state (UI shows blocked, audit log records it) is misleading. This issue has been patched in version 0.7.1.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 12:58 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/forgekeep/nebula-mesh/security… | x_refsource_CONFIRM |
| https://github.com/forgekeep/nebula-mesh/commit/0… | x_refsource_MISC |
| https://github.com/forgekeep/nebula-mesh/releases… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| forgekeep | nebula-mesh |
Affected:
< 0.7.1
|
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CVE-2026-56821 (GCVE-0-2026-56821)
Vulnerability from cvelistv5 – Published: 2026-07-28 23:07 – Updated: 2026-07-31 16:12
VLAI
EPSS
VEX
Title
Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate. Exploitation can lead to certificate revocation bypass via replay of an expired OCSP response. Any application using OcspServerCertificateValidator is affected; a revoked certificate can be accepted. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 03:55 UTC
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-9636 (GCVE-0-2026-9636)
Vulnerability from cvelistv5 – Published: 2026-07-14 15:11 – Updated: 2026-07-14 15:55
VLAI
EPSS
VEX
Title
Rockwell Automation CompactLogix® 5380 ControlLogix® 5580 / 1756-EN4 Communications Module – Certificate Revocation List Vulnerability
Summary
A security issue exists within CompactLogix® 5380, ControlLogix® 5580, and EN4 communication modules related to CIP Security certificate revocation handling. The security issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been revoked via a Certificate Revocation List (CRL). This could allow a network-based attacker to establish a connection using a certificate that should be untrusted, potentially bypassing CIP Security protections.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 15:54 UTC
CWE
- CWE-299 - Improper check for certificate revocation
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Rockwell Automation | ControlLogix® 5580, CompactLogix® 5380, GuardLogix® 5580, Compact GuardLogix® 5380, 1756-EN4TR |
Affected:
Version 36 - Version 37
|
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CVE-2026-6899 (GCVE-0-2026-6899)
Vulnerability from cvelistv5 – Published: 2026-06-09 08:39 – Updated: 2026-06-09 14:25
VLAI
EPSS
VEX
Title
Improper Check for Certificate Revocation in S2OPC
Summary
Check for certificate revocation only considers the first matching CRL and ignores other valid CRLs of the same CA in the CycloneCrypto cryptographic wrapper of S2OPC library. It might allow connection between an OPC UA client and server using a revoked certificate.
Severity
5.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 14:25 UTC
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
1 reference
Impacted products
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CVE-2026-4428 (GCVE-0-2026-4428)
Vulnerability from cvelistv5 – Published: 2026-03-19 20:37 – Updated: 2026-03-25 14:13
VLAI
EPSS
VEX
Title
CRL Distribution Point Scope Check Logic Error in AWS-LC
Summary
A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate revocation checks.
To remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-25 14:13 UTC
CWE
- CWE-299 - Improper check for certificate revocation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/aws/aws-lc/releases/tag/v1.71.0 | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | AWS-LC |
Affected:
1.24.0 , < 1.71.0
(custom)
|
|
| AWS | AWS-LC-FIPS |
Affected:
3.0.0 , < 3.3.0
(custom)
|
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CVE-2025-36057 (GCVE-0-2025-36057)
Vulnerability from cvelistv5 – Published: 2025-07-21 18:10 – Updated: 2025-08-18 01:32
VLAI
EPSS
VEX
Title
IBM Cognos Analytics Mobile (iOS) authentication bypass
Summary
IBM Cognos Analytics Mobile (iOS) 1.1.0 through 1.1.22
is vulnerable to authentication bypass by using the Local Authentication Framework library which is not needed as biometric authentication is not used in the application.
Severity
5.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-21 18:29 UTC
CWE
- CWE-299 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7239635 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | Cognos Analytics Mobile |
Affected:
1.1.0 , ≤ 1.1.22
(semver)
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CVE-2025-11955 (GCVE-0-2025-11955)
Vulnerability from cvelistv5 – Published: 2025-10-27 11:30 – Updated: 2025-10-27 13:19
VLAI
EPSS
VEX
Title
Incorrect validation of OCSP certificates in TheGreenBow VPN Client Windows Enterprise
Summary
Incorrect validation of OCSP certificates vulnerability in TheGreenBow VPN, versions 7.5 and 7.6. During the IKEv2 authentication step, the OCSP-enabled VPN client establishes the tunnel even if it does not receive an OCSP response or if the OCSP response signature is invalid.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-27 13:19 UTC
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.incibe.es/en/incibe-cert/notices/avis… | |
| https://www.thegreenbow.com/en/support/security-alerts/ | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TheGreenBow | TheGreenBow VPN Client Windows Enterprise |
Affected:
7.5
Affected: 7.6 cpe:2.3:a:thegreenbow:thegreenbow_vpn_client_windows_enterprise:7.5:*:*:*:*:*:*:* cpe:2.3:a:thegreenbow:thegreenbow_vpn_client_windows_enterprise:7.6:*:*:*:*:*:*:* |
Date Public
2025-10-27 11:00
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Mitigation
Architecture and Design
Ensure that certificates are checked for revoked status.
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 revoked status.
No CAPEC attack patterns related to this CWE.