CVE-2025-58181

Unbounded memory consumption in golang.org/x/crypto/ssh

State: Published
Severity: 5.3 Medium
Published: Nov 19, 2025
Updated: Nov 20, 2025
Reserved: Aug 27, 2025

Description

SSH servers parsing GSSAPI authentication requests do not validate the number of mechanisms specified in the request, allowing an attacker to cause unbounded memory consumption.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	CISA-ADP

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
golang.org/x/crypto/sshgolang.org/x/crypto	before 0.45.0Affected

References

https://groups.google.com/g/golang-announce/c/w-oX3UxNcZA
https://go.dev/cl/721961
https://go.dev/issue/76363
https://pkg.go.dev/vuln/GO-2025-4134

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.