OpenSSH Client: SSH Multiplexing Timeout Bypass Allows Post-Timeout File Ops
CVE-2025-54547 Published on October 29, 2025
On affected platforms, if SSH session multiplexing was configured on the client side, SSH sessions (e.g, scp, sftp) multiplexed onto the same channel could perform file-system operations after a configured session timeout expired
On affected platforms, if SSH session multiplexing was configured on the client side, SSH sessions (e.g, scp, sftp) multiplexed onto the same channel could perform file-system operations after a configured session timeout expired
Vulnerability Analysis
CVE-2025-54547 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Type
Insufficient Session Expiration
According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."
Products Associated with CVE-2025-54547
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Affected Versions
Arista Networks DANZ Monitoring Fabric:- Version 0 is affected.
- Before and including DMF 8.6.1 is affected.
- Before and including DMF 8.5.2 is affected.
- Before and including CCF 6.2.4 is affected.
- Before and including CVA 7.0 is affected.
- Before and including MCD 2.4.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.