Vulnerability in Samba
CVE-2026-58224
A flaw was found in Samba's CTDB, the clustered database service used by Samba. Insufficient integrity validation of received CTDB protocol packets allows malformed packets containing invalid field lengths, improperly terminated strings, or inconsistent packet sizes to be processed without adequate bounds checking. A remote attacker with access to the CTDB private network may trigger a denial of service through process crashes or excessive memory consumption and, in limited cases, disclose adjacent memory contents.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-58224 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- bugzilla.samba.org/show_bug.cgi (Mitigation, Issue Tracking, Vendor Advisory)
- www.samba.org/samba/security/CVE-2026-58224-advisory.html (Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-58224?
- CVE-2026-58224 is a medium-severity vulnerability in Samba, classified under CWE-353. CVSS score: 6.5/10. Published 2026-08-14.
- How severe is CVE-2026-58224?
- Medium severity. CVSS v3 base score is 6.5 out of 10.