Skip to main content
EPSS 0.5%top 58%

CVE-2025-47914: CWE-237 in golang.org/x/crypto golang.org/x/crypto/ssh/agent

0
Medium
VulnerabilityCVE-2025-47914cvecve-2025-47914cwe-237
Published: 11/19/2025 (11/19/2025, 20:33:43 UTC)
Source: CVE Database V5
Vendor/Project: golang.org/x/crypto
Product: golang.org/x/crypto/ssh/agent

Description

CVE-2025-47914 is a medium severity vulnerability in the golang.org/x/crypto/ssh/agent package where SSH Agent servers do not validate message sizes when processing new identity requests. This can cause the program to panic due to an out of bounds read if a malformed message is received.

CVSS v3.1

Score 5.3medium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected software

golang.org/x/crypto/ssh/agent
pkg:golang/golang.org/x/crypto/ssh/agent
Affected versions
=0

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/09/2026, 10:43:27 UTC

Technical Analysis

The vulnerability identified as CVE-2025-47914 affects the golang.org/x/crypto/ssh/agent package. It stems from improper validation of message sizes during the processing of new identity requests by SSH Agent servers. Specifically, the lack of size checks can lead to out of bounds reads, causing the program to panic. The issue is categorized under CWE-237 (Incorrect Comparison) and CWE-125 (Out-of-bounds Read). The CVSS v3.1 base score is 5.3, indicating a medium severity with network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability (program crash). There is no indication of known exploits in the wild or available patches at this time.

Potential Impact

Successful exploitation of this vulnerability results in a denial of service condition where the SSH Agent server may panic and crash due to out of bounds memory access when handling malformed new identity request messages. There is no impact on confidentiality or integrity reported.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider minimizing exposure of the SSH Agent service to untrusted networks or inputs to reduce the risk of denial of service.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

Technical Details

Data Version
5.2
Assigner Short Name
Go
Date Reserved
2025-05-13T23:31:29.597Z
State
PUBLISHED

Threat ID: 691e2bd54e81ab18fb452bf1

Added to database: 11/19/2025, 20:43:01 UTC

Last enriched: 06/09/2026, 10:43:27 UTC

Last updated: 09/10/2026, 19:36:50 UTC

Views: 495

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses