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Vulnerability record · CVE-2026-58224 · published 14 August 2026

CVE-2026-58224: Samba vulnerability

Samba · Samba

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.

6.5 CVSS 3.1 Medium EPSS 0.33% · top 76.7% CWE-353 · CWE-353
6.5CVSS 3.1 base score
0.33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
23 Sep 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-58224 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2502720 Issue TrackingThird Party Advisory
https://bugzilla.samba.org/show_bug.cgi?id=16085 Issue TrackingMitigationVendor Advisory
https://www.samba.org/samba/security/CVE-2026-58224-advisory.html Mailing ListVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-58224), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.