CVE-2026-4424
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Libarchive
PublishedMar 19, 2026
First seenMar 19, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Vendor advisories
- access.redhat.com/errata/RHSA-2026:10065
- access.redhat.com/errata/RHSA-2026:10097
- access.redhat.com/errata/RHSA-2026:11768
- access.redhat.com/errata/RHSA-2026:12071
- access.redhat.com/errata/RHSA-2026:12274
- access.redhat.com/errata/RHSA-2026:13812
- access.redhat.com/errata/RHSA-2026:14773
- access.redhat.com/errata/RHSA-2026:14937
- access.redhat.com/errata/RHSA-2026:15087
- access.redhat.com/errata/RHSA-2026:16008
- access.redhat.com/errata/RHSA-2026:16009
- access.redhat.com/errata/RHSA-2026:16030
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libarchive libarchive | No range specified | — |
| redhat hardened_images | No range specified | — |
| redhat openshift_container_platform | 4.0, 4.16 | — |
| redhat openshift_container_platform_for_arm64 | 4.16 | — |
| redhat openshift_container_platform_for_power | 4.16 | — |
| redhat enterprise_linux | 6.0, 7.0, 8.0, 9.0, 10.0 | — |
| redhat enterprise_linux_server_aus | 8.2, 8.4 | — |
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