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CWE-295
Improper Certificate Validation
The product does not validate, or incorrectly validates, a certificate.
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
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://psirt.canon/advisory-information/cp2026-005/ | vendor-advisory |
| https://canon.jp/support/support-info/260615vulne… | vendor-advisory |
| https://www.usa.canon.com/about-us/to-our-custome… | vendor-advisory |
| https://www.canon-europe.com/support/product-security/ | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Canon Inc. | EOS Network Setting Tool for Windows |
Affected:
1.5.0 or earlier
|
|
| Canon Inc. | EOS Network Setting Tool for macOS |
Affected:
1.5.0 or earlier
|
Credits
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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
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://psirt.canon/advisory-information/cp2026-005/ | vendor-advisory |
| https://canon.jp/support/support-info/260615vulne… | vendor-advisory |
| https://www.usa.canon.com/about-us/to-our-custome… | vendor-advisory |
| https://www.canon-europe.com/support/product-security/ | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Canon Inc. | EOS Network Setting Tool for Windows |
Affected:
1.5.0 or earlier
|
|
| Canon Inc. | EOS Network Setting Tool for macOS |
Affected:
1.5.0 or earlier
|
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CVE-2026-9697 (GCVE-0-2026-9697)
Vulnerability from cvelistv5 – Published: 2026-06-17 16:46 – Updated: 2026-06-23 03:56
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.
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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)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Credits
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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)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
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"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.