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VulnerabilityPublished

CVE-2026-124741: Red Hat Hardened Images · Out-of-bounds Write

Affects Red Hat Hardened ImagesSource CVE Database V5

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Not known to be exploited · CVSS 7.6 High.

Data as of 11 Nov 2026, 10:49 UTC

CVSS 3.1 base score
7.6High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.17.6
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/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 10 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 6busyboxAffected–Fixed in–
Red Hat Hardened ImagesbusyboxAffected–Fixed in–

AI-suggested

Currently, no mitigation is available or meets Red Hat's criteria for ease of use, deployment, applicability, or stability. Users should avoid using BusyBox's udhcpc6 DHCPv6 client in environments where security is critical or restrict exposure to untrusted DHCPv6 servers on the local network. Monitor Red Hat advisories for future updates or patches. Standard Red Hat Enterprise Linux users are not exposed as NetworkManager is the default DHCP client.

Description

CVE-2026-124741 is a vulnerability in the BusyBox udhcpc6 DHCPv6 client used in Red Hat Hardened Images. The client does not properly validate the size of network options from a DHCPv6 server, leading to a stack-based buffer overflow. This flaw can be exploited by a malicious DHCPv6 server on the local network to cause a denial of service or achieve arbitrary code execution with root privileges. The vulnerability primarily affects specialized or embedded environments where BusyBox's udhcpc6 is explicitly used, as standard Red Hat Enterprise Linux installations use NetworkManager instead. No mitigation or patch currently meets Red Hat's criteria for ease of use and deployment.

References

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