Common Weakness Enumeration

CWE-295

Improper Certificate Validation

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

CVE-2026-6900 (GCVE-0-2026-6900)

Vulnerability from cvelistv5 – Published: 2026-07-06 09:53 – Updated: 2026-07-06 18:49
VLAI
Title
Improper Certificate Validation
Summary
Improper certificate validation vulnerability in B&R Industrial Automation GmbH APROL. This issue affects APROL: before R 4.4-01P5.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper certificate validation
Assigner
ABB
References
Impacted products
Vendor Product Version
B&R Industrial Automation GmbH APROL Affected: 0 , < R 4.4-01P5 (custom)
Create a notification for this product.
Show details on NVD website
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CVE-2026-7532 (GCVE-0-2026-7532)

Vulnerability from cvelistv5 – Published: 2026-06-25 21:31 – Updated: 2026-07-01 16:47
VLAI
Title
iPAddress name constraints not enforced when WOLFSSL_IP_ALT_NAME is undefined
Summary
iPAddress name constraints bypass when WOLFSSL_IP_ALT_NAME is not defined. IP address name constraints are not enforced in that configuration, allowing a certificate to bypass an issuing CA's IP address constraints.
Severity
5.7 (Medium)
CVSS:4.0/AV:A/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
wolfSSL wolfSSL Affected: 0 , ≤ 5.9.1 (semver)
Create a notification for this product.
Credits
Ankur Tyagi of Cisco Talos (TALOS-2026-2409)
Show details on NVD website
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CVE-2026-7821 (GCVE-0-2026-7821)

Vulnerability from cvelistv5 – Published: 2026-05-07 15:26 – Updated: 2026-05-07 16:15
VLAI
Summary
Improper certificate validation in Ivanti EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0.1 allows a remote unauthenticated attacker to enroll a device belonging to a restricted set of unenrolled devices, leading to information disclosure about EPMM appliance and impacting on the integrity of the newly enrolled device identity.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper certificate validation
Assigner
References
Impacted products
Vendor Product Version
Ivanti Endpoint Manager Mobile Unaffected: 12.6.1.1
Unaffected: 12.7.0.1
Unaffected: 12.8.0.1
Create a notification for this product.
Show details on NVD website
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CVE-2026-8367 (GCVE-0-2026-8367)

Vulnerability from cvelistv5 – Published: 2026-05-13 14:55 – Updated: 2026-05-13 18:35
VLAI
Title
aria2c Improper Certificate Validation
Summary
aria2c accepts a server certificate with incorrect Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.
Severity
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper certificate validation
Assigner
References
Impacted products
Vendor Product Version
aria2_project aria2c Affected: 0 , ≤ 1.37.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-8480 (GCVE-0-2026-8480)

Vulnerability from cvelistv5 – Published: 2026-07-01 14:52 – Updated: 2026-07-01 15:45
VLAI
Title
Connection possible to the Administration portal with a revoked certificate
Summary
A vulnerability was discovered on Stormshield Network Security 4.3.0  to 4.3.41 (included), 4.4.0 to 4.8.15 (included) , 5.0.2 EA to 5.0.5 (included) A revoked client certificate can still be used to authenticate to the captive‑admin portal, allowing an attacker who possesses the revoked certificate to gain administrative access.
Severity
4.3 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper certificate validation
Assigner
References
Impacted products
Vendor Product Version
Stormshield Stormshield Network Security Affected: 4.3.0 , ≤ 4.3.41 (semver)
Affected: 4.4.0 , ≤ 4.8.15 (semver)
Affected: 5.0.2 EA , ≤ 5.0.5 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-8992 (GCVE-0-2026-8992)

Vulnerability from cvelistv5 – Published: 2026-05-22 14:24 – Updated: 2026-05-23 03:55
VLAI
Summary
An improper certificate validation vulnerability in Ivanti Secure Access Client before 22.8R6 allows a remote unauthenticated attacker to execute arbitrary code.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper certificate validation
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-9258 (GCVE-0-2026-9258)

Vulnerability from cvelistv5 – Published: 2026-06-15 23:35 – Updated: 2026-06-16 12:47
VLAI
Summary
Improper validation of SSH host keys in Canon EOS Network Setting Tool Version 1.5.0 or earlier
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper certificate validation
Assigner
References
Impacted products
Credits
This issue was discovered by Ryan Hausknecht (@haus3c)
Show details on NVD website
To clipboard 

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CVE-2026-9259 (GCVE-0-2026-9259)

Vulnerability from cvelistv5 – Published: 2026-06-15 23:36 – Updated: 2026-06-16 12:43
VLAI
Summary
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper certificate validation
Assigner
References
Impacted products
Credits
This issue was discovered by Ryan Hausknecht (@haus3c)
Show details on NVD website
To clipboard 

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CVE-2026-9697 (GCVE-0-2026-9697)

Vulnerability from cvelistv5 – Published: 2026-06-17 16:46 – Updated: 2026-07-09 12:09
VLAI
Title
undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent
Summary
Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI (socks5:// or socks://). The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert, key, rejectUnauthorized, and servername settings. Applications that pin to an internal or corporate CA via requestTls.ca will, when their proxy URI is SOCKS5, get the default Mozilla CA bundle as the trust anchor instead. Any cert signed by any publicly-trusted CA for the target hostname is accepted, breaking the intended pin and enabling MITM read and tamper of the HTTPS exchange. Affected applications are those that use undici's ProxyAgent (or Socks5ProxyAgent directly) with SOCKS5 AND rely on requestTls for TLS scope restriction. The bug was introduced in undici 7.23.0 when SOCKS5 support was added. Patches: Upgrade to undici v7.28.0 or v8.5.0. Workarounds: No workaround is available within the SOCKS5 path. If a SOCKS5 proxy with TLS scope restriction is required and an upgrade is not yet possible, route the traffic through an HTTP-proxy ProxyAgent instead, where requestTls is honored correctly.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
undici undici Affected: 7.23.0 , < 7.28.0 (semver)
Unaffected: 7.28.0 (semver)
Affected: 8.0.0 , < 8.5.0 (semver)
Unaffected: 8.5.0 (semver)
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
 Create a notification for this product.
Red Hat Cluster Observability Operator 1.5.0     cpe:/a:redhat:cluster_observability_operator:1.5::el9
 Create a notification for this product.
Red Hat Red Hat Developer Hub 1.10     cpe:/a:redhat:rhdh:1.10::el9
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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Red Hat Red Hat OpenShift Dev Spaces 3.29     cpe:/a:redhat:openshift_devspaces:3.29::el9
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Red Hat Cryostat 4     cpe:/a:redhat:cryostat:4
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Red Hat OpenShift Pipelines     cpe:/a:redhat:openshift_pipelines:1
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Red Hat Red Hat Build of Podman Desktop     cpe:/a:redhat:podman_desktop:1
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Red Hat Red Hat Openshift Data Foundation 4     cpe:/a:redhat:openshift_data_foundation:4
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Red Hat Red Hat OpenShift Dev Spaces     cpe:/a:redhat:openshift_devspaces:3
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Red Hat Self-service automation portal 2     cpe:/a:redhat:ansible_portal:2
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Red Hat Red Hat AMQ Broker 7     cpe:/a:redhat:amq_broker:7
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Credits
tonghuaroot UlisesGascon
Show details on NVD website
To clipboard 

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CVE-2026-9758 (GCVE-0-2026-9758)

Vulnerability from cvelistv5 – Published: 2026-06-10 12:32 – Updated: 2026-06-10 13:54
VLAI
Title
Improper Certificate Validation in S2OPC
Summary
Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered trusted
Severity
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Systerel S2OPC Affected: 1.5.0 , < 1.7.3 (semver)
Create a notification for this product.
Credits
Systerel
Show details on NVD website
To clipboard 

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              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-10T12:32:39.183Z",
        "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
        "shortName": "GitLab"
      },
      "references": [
        {
          "url": "https://gitlab.com/systerel/S2OPC/-/work_items/1770"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade S2OPC to release version \u003e 1.7.2"
        }
      ],
      "title": "Improper Certificate Validation in S2OPC"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
    "assignerShortName": "GitLab",
    "cveId": "CVE-2026-9758",
    "datePublished": "2026-06-10T12:32:39.183Z",
    "dateReserved": "2026-05-27T18:03:27.169Z",
    "dateUpdated": "2026-06-10T13:54:59.235Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
Mitigation

Phases: Architecture and Design, Implementation

Description:

  • Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation

Phase: Implementation

Description:

  • 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.

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