CVE-2025-61727

Name: CVE-2025-61727
Creator: NVD / NIST
Published: 2025-12-03T20:16:25.607+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2025-61727 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS Probability

0.27%

18.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Golang	Go	< 1.24.11
Golang	Go	>= 1.25, < 1.25.5

References

https://go.dev/cl/723900Patch
https://go.dev/issue/76442Issue Tracking
https://groups.google.com/g/golang-announce/c/8FJoBkPddm4Mailing List, Release Notes
https://pkg.go.dev/vuln/GO-2025-4175Vendor Advisory

Timeline

Published: Dec 3, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-61727?

How severe is CVE-2025-61727?

CVE-2025-61727 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2025-61727?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-61727?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST