CVE-2025-47914

Malformed constraint may cause denial of service in golang.org/x/crypto/ssh/agent

State: Published
Severity: 5.3 Medium
Published: Nov 19, 2025
Updated: Nov 20, 2025
Reserved: May 13, 2025

Description

SSH Agent servers do not validate the size of messages when processing new identity requests, which may cause the program to panic if the message is malformed due to an out of bounds read.

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-125 Out-of-bounds Read

Affected Products

Product	Versions
golang.org/x/crypto/ssh/agentgolang.org/x/crypto	before 0.45.0Affected

References

https://groups.google.com/g/golang-announce/c/w-oX3UxNcZA
https://go.dev/cl/721960
https://go.dev/issue/76364
https://pkg.go.dev/vuln/GO-2025-4135

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