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VulnerabilityPublished Updated

CVE-2026-58224: samba

Affects sambaSource GCVE Database

0
Authoritative record:CVE-2026-58224· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium · fixed in 2:4.15.13+dfsg-0ubuntu1.13 : update samba when convenient.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2:4.15.13+dfsg-0ubuntu1.13, 2:4.19.5+dfsg-4ubuntu9.7, 2:4.23.6+dfsg-1ubuntu2.2
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade the Ubuntu samba to 2:4.15.13+dfsg-0ubuntu1.13 (package) or 2:4.19.5+dfsg-4ubuntu9.7 (package) or 2:4.23.6+dfsg-1ubuntu2.2 (package).

Affected software

ProductAffectedFixed in
Ubuntu 26.04 LTSsambapkg:deb/ubuntu/samba?arch=source&distro=resoluteOther threatsAffected
  • <2:4.23.6+dfsg-1ubuntu2.2
Fixed in
  • 2:4.23.6+dfsg-1ubuntu2.2
Ubuntu 24.04 LTSsambapkg:deb/ubuntu/samba?arch=source&distro=nobleOther threatsAffected
  • <2:4.19.5+dfsg-4ubuntu9.7
Fixed in
  • 2:4.19.5+dfsg-4ubuntu9.7
Ubuntu 22.04 LTSsambapkg:deb/ubuntu/samba?arch=source&distro=jammyOther threatsAffected
  • <2:4.15.13+dfsg-0ubuntu1.13
Fixed in
  • 2:4.15.13+dfsg-0ubuntu1.13
Ubuntu Pro 20.04 LTSsambapkg:deb/ubuntu/samba?arch=source&distro=esm-infra/focalOther threatsAffected
  • 2:4.10.7+dfsg-0ubuntu2 – 2:4.15.13+dfsg-0ubuntu0.20.04.8+esm2
37 affected builds
Fixed in–
Ubuntu Pro 18.04 LTSsambapkg:deb/ubuntu/samba?arch=source&distro=esm-infra/bionicOther threatsAffected
  • 2:4.6.7+dfsg-1ubuntu3 – 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3
32 affected builds
Fixed in–
Ubuntu Pro 16.04 LTSsambapkg:deb/ubuntu/samba?arch=source&distro=esm-infra/xenialOther threatsAffected
  • 2:4.1.17+dfsg-4ubuntu2 – 2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4
46 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

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.

References

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