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CVE-2026-4424

Libarchive: libarchive: information disclosure via heap out-of-bounds read in rar archive processing

Published: Mar 19, 2026Updated: Jul 15, 2026 Sources: CVE List NVD BDUCWE-125
7.5HIGH
NVD MITRE
EPSS Score
0.9%
Top 44.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-125

Affected Products

Red Hat Inc.
commercial·USaka redhat, Red Hat
hardened imagesOn-prem
Operating Systems / linux-distro
openshift container platformOn-prem
Operating Systems / linux-distro
openshift container platform for arm64On-prem
Operating Systems / linux-distro
openshift container platform for powerOn-prem
Operating Systems / linux-distro
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 10.0 Extended Update SupportOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 7 Extended Lifecycle SupportOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.2 Advanced Update SupportOn-premOS
Operating Systems / linux-distro
libarchive
oss-project
libarchiveLibraryLibrary
OSS Libraries / generic-library
Canonical Ltd.
commercial·GBaka canonical
UbuntuOn-premOS
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
libarchiveLibraryLibrary
OSS Libraries / generic-library
and 39 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:10065
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:10097
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:11768
access.redhat.com
and 38 more references View all →

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