CVE-2025-61727

Aliases:GO-2025-4175BIT-golang-2025-61727
Advisory lineage Upstream: 0 Downstream: 26
Analyzed
Published: 03 Dec 2025, 19:37
Last modified:03 Dec 2025, 22:06

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (cve.org)
EPSS Score
<0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Dec 2025, 19:37
Published
Vulnerability first disclosed
03 Dec 2025, 22:06
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Techniques & Countermeasures

  • CWE-295•Improper Certificate Validation

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

Affected Systems

  • go standard library•crypto/x509

    < 1.24.11 | ≥ 1.25.0, < 1.25.5

  • golang•go

    < 1.24.11 | ≥ 1.25, < 1.25.5

  • Go•stdlib

    ≥ 1.25.0, < 1.25.5

References (4)