Vulnerability · NVD

CVE-2025-26466

CVE-2025-26466 : medium severity (CVSS 5.9). No tracked catalog app is linked to this CVE.

Severity (CVSS): 5.9
Exploitation: 39.8 %
Tracked apps: 0
Still exposed: 0

Published on 2025-02-28

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.

Attack vector : Network No privileges required No user interaction

Show raw CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS 39.85% moderate exploit risk percentile 98.6%

OS versions that fix this CVE

This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.

macOS Fixed in 15.5 14.7.6

View on NVD ↗

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