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VulnerabilityPublished Updated

CVE-2026-4424: Red Hat Enterprise Linux 10 · Out-of-bounds Read

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 1 Nov 2026, 08:20 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.2% chance of exploitation in 30 days – higher than 69% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Mar 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 31 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10libarchiveAffected–Fixed in–
Red Hat Enterprise Linux 10.0 Extended Update SupportlibarchiveAffected–Fixed in–
Red Hat Enterprise Linux 7 Extended Lifecycle SupportlibarchiveAffected–Fixed in–
Red Hat Enterprise Linux 8libarchiveAffected–Fixed in–
Red Hat Enterprise Linux 8.2 Advanced Update SupportlibarchiveAffected–Fixed in–
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportlibarchiveAffected–Fixed in–

AI-suggested

Red Hat has published multiple security advisories addressing CVE-2026-4424 with updated libarchive packages and container images. Users of Red Hat Enterprise Linux 10 and Red Hat OpenShift Container Platform 4.16 are advised to apply these official updates promptly via their respective update channels. Patch status is confirmed by Red Hat advisories linked in the references. No additional mitigations beyond applying the official fixes are specified.

Description

A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.

References

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