Common Weakness Enumeration

CWE-295

Allowed

Improper Certificate Validation

Abstraction: Base · Status: Draft

The product does not validate, or incorrectly validates, a certificate.

2327 vulnerabilities reference this CWE, most recent first.

CVE-2026-87733 (GCVE-0-2026-87733)

Vulnerability from cvelistv5 – Published: 2026-09-09 04:08 – Updated: 2026-09-09 13:02
VLAI
Summary
An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions {P256,P384,P521}.Dsa.pub_of_octets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 13:02 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2324 records in the last 180 days details
References
Impacted products
Vendor Product Version
OCaml mirage-crypto-ec Affected: 0 , < 2.2.0 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-87425 (GCVE-0-2026-87425)

Vulnerability from cvelistv5 – Published: 2026-10-08 06:51 – Updated: 2026-10-08 17:54
VLAI
Summary
An unauthenticated remote attacker can modify the TLS client trust store in Brocade ASCG versions before 3.5.0. By supplying an unauthorized Certificate Authority (CA) certificate to an unauthenticated management interface, the attacker can cause the system to trust unauthorized certificates, potentially enabling Man-in-the-Middle (MITM) attacks against outbound communications with managed switches and peer nodes.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 15:14 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
brocade CNA under the mitre root
CNA scorecard B 75/100 over 70 records in the last 180 days details
Impacted products
Vendor Product Version
Brocade Brocade Active Support Connectivity Gateway Affected: 0 , < 3.5.0 (Brocade ASC-G)
Create a notification for this product.
Show details on NVD website

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CVE-2026-86474 (GCVE-0-2026-86474)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:02 – Updated: 2026-09-16 13:25
VLAI
Title
Improper Certificate Validation in the Firmware Download vulnerability
Summary
The lack of TLS certificate validation when downloading firmware updates in VEO and VEO-XS Wi-Fi monitors, in versions prior to 01.48.001, allows an attacker to perform man-in-the-middle attacks on the update channel.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 13:25 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
FERMAX CNA under the INCIBE root
CNA scorecard – unranked: 4 records in the last 180 days, 10 needed details
References
URL Tags
https://fermax.com/security-advisories vendor-advisory
Impacted products
Show details on NVD website

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CVE-2026-86185 (GCVE-0-2026-86185)

Vulnerability from cvelistv5 – Published: 2026-09-05 11:38 – Updated: 2026-09-08 18:15
VLAI
Title
Bilibili Desktop through 1.18.0 Remote Code Execution via TLS Verification Bypass
Summary
Bilibili Desktop through 1.18.0 disables TLS certificate verification process-wide and executes unsigned remote JavaScript configuration without integrity checks. An attacker in an on-path network position can intercept configuration fetches, inject arbitrary JavaScript executed in the renderer with access to the privileged IPC bridge, and execute system commands or steal login credentials.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 18:15 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6518 records in the last 180 days details
Impacted products
Vendor Product Version
Bilibili Bilibili Desktop Affected: 0 , ≤ 1.18.0 (custom)
Create a notification for this product.
Date Public
2026-09-04 00:00
Show details on NVD website

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CVE-2026-86131 (GCVE-0-2026-86131)

Vulnerability from cvelistv5 – Published: 2026-09-29 23:05 – Updated: 2026-10-01 17:08
VLAI
Title
Fireware OS Code Injection in BOVPN Over TLS Client Allows Remote Code Execution
Summary
A code injection vulnerability in WatchGuard Fireware OS's BOVPN Over TLS client configuration handling allows an attacker who controls the remote VPN server to execute arbitrary commands as root on the connecting Firebox.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 03:55 UTC
Assigner
WatchGuard CNA under the mitre root
CNA scorecard A 91/100 over 73 records in the last 180 days details
References
Impacted products
Vendor Product Version
WatchGuard Fireware OS Affected: 2026.3 , < 2026.3.2 (custom)
Affected: 2025.0 , < 2026.2.3 (custom)
Affected: 12.0 , < 12.12.3 (custom)
Create a notification for this product.
WatchGuard Fireware OS Affected: 12.0 , < 12.5.21 (custom)
Create a notification for this product.
Credits
Show details on NVD website

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CVE-2026-85525 (GCVE-0-2026-85525)

Vulnerability from cvelistv5 – Published: 2026-09-04 08:22 – Updated: 2026-09-10 15:44
VLAI
Title
Improper OCSP response validation in Snowflake drivers
Summary
Improper OCSP response validation in the Snowflake Python, Go, JDBC, and Node.js drivers allowed a revoked TLS certificate to be accepted as valid, because OCSP responses were not reliably bound to the certificate being validated and definitive verification failures were treated as transient. A man-in-the-middle attacker holding a revoked certificate and its private key for a Snowflake or stage hostname could cause the driver to establish a TLS session to the attacker-controlled endpoint anyway, allowing the attacker to read and modify data transmitted within that connection. Successful exploitation requires that on-path position and the corresponding private key, and impact is limited to data carried within the intercepted connection. The fix is available in Snowflake Connector for Python v4.7.3, Snowflake Go Driver v2.2.0, Snowflake JDBC Driver v4.3.4 (including the snowflake-jdbc-fips and snowflake-jdbc-thin), and Snowflake Node.js Driver v3.3.0. Users must manually upgrade.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 19:40 UTC
CWE
  • CWE-295 - Improper Certificate Validation
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
SNOWFLAKE CNA
CNA scorecard C 66/100 over 19 records in the last 180 days details
Show details on NVD website

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CVE-2026-85247 (GCVE-0-2026-85247)

Vulnerability from cvelistv5 – Published: 2026-10-19 10:33 – Updated: 2026-10-19 17:00
VLAI
Title
Apache Camel: Camel-Knative Improper Certificate Validation When SSL Is Enabled Without a Truststore
Summary
Improper Certificate Validation vulnerability in Apache Camel Knative component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. When SSL was enabled on the Knative HTTP client but no truststore was configured, the client options fell back to trusting every presented certificate rather than to the JVM's default trust anchors. A deployment that switched TLS on without also configuring a truststore therefore obtained an encrypted connection with no peer authentication, which an attacker positioned on the network path can terminate and read. The dangerous state is reached by omission rather than by an explicit opt-in, which is what makes it a framework defect: turning TLS on should not be the thing that turns certificate validation off. Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. Users on the 4.22.x LTS releases stream should upgrade to 4.22.1. With no truststore configured the trust options are now left unset so the JVM default trust anchors apply, the same fallback SSLContextParameters and the rest of Camel use. Trusting every certificate is now reached only by asking for it explicitly through the trust.all property, which remains available for development against a cluster with a self-signed certificate. For deployments that cannot upgrade immediately, configure a truststore explicitly wherever SSL is enabled. After upgrading, a deployment that was relying on the implicit trust-all behaviour must either configure a truststore or set the trust.all property deliberately.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 17:00 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1010 records in the last 180 days details
Impacted products
Vendor Product Version
Apache Software Foundation Apache Camel Affected: 4.0.0 , < 4.18.5 (maven)
Affected: 4.19.0 , < 4.22.1 (maven)
Unaffected: 4.18.5 (maven)
Unaffected: 4.22.1 (maven)
Unaffected: 4.23.0 (maven)
Create a notification for this product.
Show details on NVD website

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CVE-2026-85221 (GCVE-0-2026-85221)

Vulnerability from cvelistv5 – Published: 2026-09-03 14:16 – Updated: 2026-09-03 14:22
VLAI
Title
MISP CurlClient TLS Peer Verification Disabled by Default Enables Man-in-the-Middle Attacks
Summary
MISP contains an improper TLS certificate validation vulnerability in CurlClient. The CurlClient::$verifyPeer property was not explicitly initialized and therefore defaulted to null. When passed to cURL, this value effectively disabled TLS peer verification unless the calling code explicitly enabled it. As a result, HTTPS connections made through affected CurlClient instances could accept certificates that were not issued by a trusted certificate authority. An attacker capable of intercepting or manipulating network traffic between a MISP instance and a remote HTTPS service could impersonate the remote endpoint and perform a man-in-the-middle attack. Successful exploitation could allow an attacker to observe sensitive information transmitted by MISP, including authentication material or exchanged threat intelligence, and to modify responses returned to the MISP instance. The impact depends on the functionality using CurlClient and the data exchanged with the remote service. The patch enables TLS peer verification by default while preserving explicit support for configured self-signed certificates. It also corrects the self-signed certificate handling in SyncTool so that peer verification is disabled only when no pinned CA certificate is configured.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 14:22 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
CIRCL CNA under the ENISA root
CNA scorecard A 90/100 over 244 records in the last 180 days details
References
Impacted products
Vendor Product Version
misp misp Affected: 0 , ≤ 2.5.45 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-85102 (GCVE-0-2026-85102)

Vulnerability from cvelistv5 – Published: 2026-09-09 13:00 – Updated: 2026-09-23 03:55
VLAI
Title
Improper Certificate Validation in Quantum Security Gateway
Summary
Improper certificate trust validation during VPN negotiation in Check Point Quantum Security Gateway may allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 00:00 UTC
CWE
  • CWE-295 - Improper Certificate Validation.
Assigner
checkpoint CNA under the mitre root
CNA scorecard C 66/100 over 17 records in the last 180 days details
Impacted products
Vendor Product Version
checkpoint Quantum Security Gateway Affected: R82.10 with Jumbo Hotfix Take 43 or below
Affected: R82 with Jumbo Hotfix Take 125 or below
Affected: R81.20 with Jumbo Hotfix Take 165 or below
Create a notification for this product.
Show details on NVD website

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CVE-2026-85088 (GCVE-0-2026-85088)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:37 – Updated: 2026-10-02 17:40
VLAI
Title
Apache Thrift, Apache Thrift: The C++ and D clients fall back to the certificate Common Name when subjectAltName entries are present but do not match
Summary
Improper Validation of Certificate with Host Mismatch in the C++ and D libraries of Apache Thrift. Both libraries install a default access manager for client sockets — TSSLSocketFactory does so in C++, and the accessManager property does so in D — which compares the peer certificate against the host name that was connected to. That comparison walks the subjectAltName dNSName entries first and consults the certificate Common Name afterwards. A name that does not match yields a "skip" result rather than a rejection, so a certificate whose subjectAltName entries are all present and all non-matching falls through to the Common Name, which can then satisfy the check. RFC 6125 section 6.4.4, and RFC 9525 section 2, require that the Common Name is not consulted when a dNSName subjectAltName is present. A certificate carrying subjectAltName entries for one name and a Common Name for another is therefore accepted for a connection to the second name. Exploitation requires an attacker positioned on the network path who holds a certificate that chains to a certificate authority in the client's trust store and whose Common Name matches the connected host name. Public certificate authorities have not issued on Common Name alone for many years, so this is principally a concern for deployments using a private or enterprise public-key infrastructure. This issue affects the C++ library of Apache Thrift from 0.7.0 through 0.24.0 and the D library from 0.9.0 through 0.24.0. Users should upgrade to 0.25.0.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 17:39 UTC
CWE
  • CWE-295 - Improper certificate validation
  • CWE-297 - Improper validation of certificate with host mismatch
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1010 records in the last 180 days details
Impacted products
Vendor Product Version
Apache Software Foundation Apache Thrift Affected: 0 , < 0.25.0 (semver)
Create a notification for this product.
Show details on NVD website

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              "value": "\u003cp\u003eImproper Validation of Certificate with Host Mismatch in the C++ and D libraries of Apache Thrift.\n\u003cbr\u003e\n\u003cbr\u003eBoth libraries install a default access manager for client sockets \u2014 TSSLSocketFactory does so in C++, and the accessManager property does so in D \u2014 which compares the peer certificate against the host\n\u003cbr\u003ename that was connected to. That comparison walks the subjectAltName dNSName entries first and consults the certificate Common Name afterwards. A name that does not match yields a \"skip\" result rather than\n\u003cbr\u003ea rejection, so a certificate whose subjectAltName entries are all present and all non-matching falls through to the Common Name, which can then satisfy the check.\n\u003cbr\u003e\n\u003cbr\u003eRFC 6125 section 6.4.4, and RFC 9525 section 2, require that the Common Name is not consulted when a dNSName subjectAltName is present. A certificate carrying subjectAltName entries for one name and a\n\u003cbr\u003eCommon Name for another is therefore accepted for a connection to the second name.\n\u003cbr\u003e\n\u003cbr\u003eExploitation requires an attacker positioned on the network path who holds a certificate that chains to a certificate authority in the client\u0027s trust store and whose Common Name matches the connected host\n\u003cbr\u003ename. Public certificate authorities have not issued on Common Name alone for many years, so this is principally a concern for deployments using a private or enterprise public-key infrastructure.\n\u003cbr\u003e\n\u003cbr\u003eThis issue affects the C++ library of Apache Thrift from 0.7.0 through 0.24.0 and the D library from 0.9.0 through 0.24.0. Users should upgrade to 0.25.0.\u003c/p\u003e"
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    "datePublished": "2026-10-02T11:37:14.749Z",
    "dateReserved": "2026-09-02T23:36:14.032Z",
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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.