VULNERABILITY INTELLIGENCE

CVE-2025-5449

CVSS score4.3 MEDIUM
EPSS probability1.03%
CISA KEVNot currently listed
Published2025-07-25
Last modified2026-08-31
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Description

A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service.

Weakness classification

  • CWE-190: Integer Overflow or Wraparound

Primary references