NULL pointer dereference in Libssh
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (11.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2025-8114 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- git.libssh.org/projects/libssh.git/commit/
- git.libssh.org/projects/libssh.git/commit/
- www.libssh.org/security/advisories/CVE-2025-8114.txt
- access.redhat.com/errata/RHSA-2026:18683 (vendor-advisory)
Frequently asked questions
- What is CVE-2025-8114?
- CVE-2025-8114 is a medium-severity vulnerability in Libssh, classified under NULL Pointer Dereference. CVSS score: 4.7/10. Published 2025-07-24.
- How severe is CVE-2025-8114?
- Medium severity. CVSS v3 base score is 4.7 out of 10.