Skip to content

golang.org/x/crypto/ssh/agent vulnerable to panic if message is malformed due to out of bounds read

Moderate severity GitHub Reviewed Published Nov 19, 2025 to the GitHub Advisory Database • Updated Nov 20, 2025

Package

gomod golang.org/x/crypto (Go)

Affected versions

< 0.45.0

Patched versions

0.45.0

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.

References

Published by the National Vulnerability Database Nov 19, 2025
Published to the GitHub Advisory Database Nov 19, 2025
Reviewed Nov 19, 2025
Last updated Nov 20, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(11th percentile)

Weaknesses

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer. Learn more on MITRE.

CVE ID

CVE-2025-47914

GHSA ID

GHSA-f6x5-jh6r-wrfv

Source code

Credits

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.