Low severity3.1NVD Advisory· Published Sep 9, 2025· Updated May 6, 2026

CVE-2025-8277

Description

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.

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

access.redhat.com/security/cve/CVE-2025-8277nvd
bugzilla.redhat.com/show_bug.cginvd
www.libssh.org/security/advisories/CVE-2025-8277.txtnvd

News mentions

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