CVE-2025-8114

A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.

What this means for your business

It affects Libssh. It matters if your company, or a supplier that handles your data, runs it.
An attacker can use it only with access to the machine itself, with an ordinary user login, and without anyone at your company clicking anything.

What to do

1Check whether your company or your suppliers run Libssh, and which version. The affected versions are listed further down this page.
2If you do, follow the vendor's guidance. No patch reference has been published yet.

Not sure if your company is exposed?

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Scoring

CVSS: 4.7 (v3.1)
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-476
Assigned by: secalert@redhat.com

Dates

Published: 2025-07-24
Last modified: 2026-09-01
Sources: NVD

Affected products

Libssh Libssh- 0.11.2

As listed in the NVD configuration data. Not a statement about your estate.