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CVE-2026-124743VulnerabilityPublished Updated

BusyBox

Affects busyboxSource GCVE Database

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Authoritative record:CVE-2026-124743· Medium 5.5

Not known to be exploited · CVSS 5.5 Medium.

Data as of 13 Nov 2026, 22:04 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.15.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10busyboxpkg:deb/ubuntu/busybox?arch=source&distro=stonkingOther threatsAffected
  • 1:1.37.0-7ubuntu1 – 1:1.38.0-3ubuntu4
6 affected builds
Fixed in–
Ubuntu 26.04 LTSbusyboxpkg:deb/ubuntu/busybox?arch=source&distro=resoluteOther threatsAffected
  • =1:1.37.0-4ubuntu1
  • =1:1.37.0-7ubuntu1
Fixed in–
Ubuntu 24.04 LTSbusyboxpkg:deb/ubuntu/busybox?arch=source&distro=nobleOther threatsAffected
  • 1:1.36.1-3ubuntu1 – 1:1.36.1-6ubuntu3.1
4 affected builds
Fixed in–
Ubuntu 22.04 LTSbusyboxpkg:deb/ubuntu/busybox?arch=source&distro=jammyOther threatsAffected
  • 1:1.30.1-6ubuntu3 – 1:1.30.1-7ubuntu3.1
5 affected builds
Fixed in–
Ubuntu 20.04 LTSbusyboxpkg:deb/ubuntu/busybox?arch=source&distro=focalOther threatsAffected
  • 1:1.30.1-4ubuntu4 – 1:1.30.1-4ubuntu6.5
8 affected builds
Fixed in–
Ubuntu Pro 18.04 LTSbusyboxpkg:deb/ubuntu/busybox?arch=source&distro=esm-infra/bionicOther threatsAffected
  • 1:1.22.0-19ubuntu2 – 1:1.27.2-2ubuntu3.4+esm1
10 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 BusyBox. When processing filesystem metadata, the volume identification component does not properly validate header values in HFS+ filesystems. An attacker able to attach a storage device or supply a specially crafted filesystem image can trigger an application crash, resulting in a Denial of Service (DoS) and preventing device resolution.

References

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