6.5

CVE-2026-58224: Samba: ctdb fails to do integrity checking of received packets

Modified
AliasesUBUNTU-CVE-2026-58224DEBIAN-CVE-2026-58224
Published 14-08-2026Last modified 21-10-2026

Vulnerability summary

CVE-2026-58224 is a medium (CVSS 6.5) Missing Support for Integrity Check vulnerability in redhat enterprise_linux. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 27.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.34%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 14
OPENSUSE-SU-2026:11431-1OPENSUSE-SU-2026:21475-1OPENSUSE-SU-2026:21540-1SUSE-SU-2026:22977-1SUSE-SU-2026:23003-1SUSE-SU-2026:23129-1

Timeline

  1. 14-08-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.33% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • sambaAll versions (No fix recorded) | < 2:4.22.10+dfsg-0+deb13u2 | < 2:4.24.5+dfsg-1
Redhat1 product
Samba1 product
Ubuntu1 product
  • sambaAll versions (No fix recorded) | < 2:4.15.13+dfsg-0ubuntu1.13 | < 2:4.19.5+dfsg-4ubuntu9.7 | < 2:4.23.6+dfsg-1ubuntu2.2

4 vendors · 4 products

References

9 links