Vulnerability Report

CVE-2025-61727

Title: Certificate chain excluded subdomain constraint bypass for wildcard SANs

Other

Proof Of Concept

No public PoC currently indexed for CVE-2025-61727.

CWE Category CWE-295

Published Date Dec 03, 2025

Modified Date Dec 18, 2025

Exploit Status Not Found

Score 6.5 CVSS v3.1

Exploit Probability (EPSS)

0.01%

Vulnerability Summary

CVE-2025-61727: 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.

Impacted Vendors

golang 1

ecies 1

go 1

Reference Links

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

CVSS v3.1

Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0

Severity MEDIUM

6.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-61727 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

December 18, 2025 MODIFIED

Vulnerability data or affected products updated.

December 18, 2025 MODIFIED

Vulnerability data updated via NVD.

December 03, 2025 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.