CVE-2025-61727
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Go standard library | crypto/x509 | 0 < 1.24.11 | affected |
| Go standard library | crypto/x509 | 1.25.0 < 1.25.5 | affected |
Weaknesses
- CWE-295: Improper Certificate Validation
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
- https://go.dev/cl/723900
- https://go.dev/issue/76442
- https://groups.google.com/g/golang-announce/c/8FJoBkPddm4
- https://pkg.go.dev/vuln/GO-2025-4175
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