CVEvulnerability
CVE-2025-8277
3.1 LOW
Official page ↗
- Status
- Deferred
- Published
- 2025-09-09
- Last modified
- 2026-10-18
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 3.1 LOW — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-401
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.
Related
Weakness · CWE (1)
- CWE-401 Missing Release of Memory after Effective Lifetime weakness
References
- https://access.redhat.com/errata/RHSA-2026:18683 access.redhat.com
- https://access.redhat.com/security/cve/CVE-2025-8277 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2383888 bugzilla.redhat.com
- https://www.libssh.org/security/advisories/CVE-2025-8277.txt www.libssh.org