SSH Agent Vulnerability in Go Programming Language
CVE-2025-47914

5.3MEDIUM

Key Information:

Vendor

Golang.org/x/crypto

Status
Golang.org/x/crypto/ssh/agent
Vendor
CVE Published:
19 November 2025

What is CVE-2025-47914?

In the Go programming language, SSH Agent servers fail to properly validate the size of messages when processing new identity requests. This flaw may lead to a program panic, particularly when malformed messages result in an out of bounds read condition. This vulnerability highlights the necessity for robust message validation to prevent potential disruptions in SSH Agent functionality.

References

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

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakub Ciolek
JSON
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CVE-2025-47914 : SSH Agent Vulnerability in Go Programming Language