Out-of-bounds Read in Libarchive
CVE-2026-4424
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 attack…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (27.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Libarchive
- Red Hat Ai Inference Server 3.2 — versions 1779223651, 1779223654
- Red Hat Ai Inference Server 3.3 — versions 1778244531, 1778244559, 1778244546
- Red Hat Discovery 2 — versions 1778101579, 1778156756
- Red Hat Enterprise Linux 10 — versions 0:3.7.7-8.el10_1
- Red Hat Enterprise Linux 10.0 Extended Update Support — versions 0:3.7.7-5.el10_0
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7 Extended Lifecycle Support — versions 0:3.1.2-14.el7_9.2
- Red Hat Enterprise Linux 8 — versions 0:3.3.3-7.el8_10
- Red Hat Enterprise Linux 8.2 Advanced Update Support — versions 0:3.3.2-8.el8_2.2
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-4424?
- CVE-2026-4424 is a high-severity vulnerability in Libarchive, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-03-19.
- How severe is CVE-2026-4424?
- High severity. CVSS v3 base score is 7.5 out of 10.