CVE-2025-8277
LOWLibssh - Memory Corruption
Title source: llmDescription
A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.
Scores
CVSS v3
3.1
EPSS
0.0005
EPSS Percentile
15.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Classification
CWE
CWE-401
Status
draft
Timeline
Published
Sep 09, 2025
Tracked Since
Feb 18, 2026