VULNERABILITY

OpenSSH Vulnerability: CVE-2025-26466

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OpenSSH Vulnerability: CVE-2025-26466

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
02/28/2025
Created
03/11/2025
Added
03/10/2025
Modified
03/10/2025

Description

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.

Solution(s)

  • openbsd-openssh-upgrade-latest

References

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