CVE-2025-5449
6.5
MEDIUM
CVSS 3.1
EPSS 0.52%
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.
How to fix CVE-2025-5449
To remediate CVE-2025-5449, upgrade the affected package to a fixed version below.
- —upgrade to 0.11.2-1 or later
Is CVE-2025-5449 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.11.2-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |