NULL pointer dereference in Libssh
CVE-2026-0968
A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (35.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Libssh
- Red Hat Enterprise Linux 10 — versions 0:0.12.0-2.el10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:0.10.4-18.el9
- Red Hat Hardened Images
- Red Hat Openshift Container Platform 4
- Red Hat Enterprise Linux — versions 9.0, 10.0
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-0968 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory)
- www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/ (Release Notes)
- access.redhat.com/errata/RHSA-2026:18160 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:18683 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-0968?
- CVE-2026-0968 is a low-severity vulnerability in Libssh, classified under NULL Pointer Dereference. CVSS score: 3.1/10. Published 2026-03-26.
- How severe is CVE-2026-0968?
- Low severity. CVSS v3 base score is 3.1 out of 10.