CVE-2026-4424: Red Hat Enterprise Linux 10 · Out-of-bounds Read
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 1 Nov 2026, 08:20 UTC
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 19 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10libarchive | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10.0 Extended Update Supportlibarchive | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7 Extended Lifecycle Supportlibarchive | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8libarchive | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.2 Advanced Update Supportlibarchive | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportlibarchive | Affected– | 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
- access.redhat.com/errata/RHSA-2026:10065 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10097 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:11768 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:12071 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:12274 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:13812 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14773 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14937 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:15087 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:16008 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:16009 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:16030 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:16174 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:17596 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19724 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:19725 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20040 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21690 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25096 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8492 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8510 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8517 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8521 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8534 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8864 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8865 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8866 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8867 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8873 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8908 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8944 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:9026 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:9592 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:9832 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-4424 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2449006 (opens in a new tab)
- github.com/libarchive/libarchive/pull/2898 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4424.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:72502 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:82304 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:82322 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:82347 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:82354 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:82372 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:82857 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:82888 (opens in a new tab)