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CVE-2024-21626VulnerabilityPublished Updated

Red Hat Security Advisory: runc security update

Affects Red Hat runcSource GCVE Database

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Public exploit available (Metasploit) · 18% EPSS.

Data as of 29 Oct 2026, 10:36 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
18.9% chance of exploitation in 30 days – higher than 97% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Feb 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    1 Metasploit module

  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 29 Oct 2026.

What to do

AI-suggested

Red Hat has released an official security update fixing this vulnerability in runc version 1.1.12-1.el9_0 for Red Hat Enterprise Linux 9.0 Extended Update Support and related variants. Users should apply this update promptly to remediate the issue. For detailed update instructions, refer to Red Hat's advisory and article at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.

Description

A security vulnerability in the runC container runtime tool was identified as a file descriptor leak (CVE-2024-21626). This issue affects Red Hat Enterprise Linux 9.0 Extended Update Support and related variants. The vulnerability has been rated as important by Red Hat Product Security. A security update addressing this flaw is available in version 1.1.12-1.el9_0 of the runc package. Public exploit code exists in Metasploit, but there are no known exploits in the wild at this time.

References

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