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High 7.5Published Mar 19, 2026

CVE-2026-4424Libarchive: libarchive: information disclosure via heap out-of-bounds read in rar archive processing

Updated under an hour ago ()

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It affects Red Hat Enterprise Linux 10 and 21 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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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.

CVSS
7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE)
CWE-125
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
redhat
NVD analysis
Modified
Record last updated
Oct 14, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
from 0:3.7.7-8.el10_1 not affected
CNA record
from 0:3.7.7-5.el10_0 not affected
CNA record
from 0:3.1.2-14.el7_9.2 not affected
CNA record
from 0:3.3.2-8.el8_2.2 not affected
CNA record
from 0:3.3.3-1.el8_4.2 not affected
CNA record
from 0:3.3.3-6.el8_6.1 not affected
CNA record
from 0:3.3.3-6.el8_6.1 not affected
CNA record
from 0:3.5.3-5.el9_4 not affected
CNA record
from 412.86.202604281506-0 not affected
CNA record
from 7.13.5-4.1777325677 not affected
CNA record
from 1791371080 not affected
CNA record
Red Hat Red Hat AI Inference Server 3.2
redhat:ai_inference_server
from 1779223654 not affected
CNA record
from 1778101579 not affected
CNA record
from 3.8.7-1.hum1 not affected
CNA record
from 1776868961 not affected
CNA record
from 1776868774 not affected
CNA record
from 0:3.7.7-8.el10_1 not affected
CISA ADP
from 0:3.7.7-5.el10_0 not affected
CISA ADP
from 0:3.1.2-14.el7_9.2 not affected
CISA ADP
from 0:3.3.2-8.el8_2.2 not affected
CISA ADP
from 0:3.3.3-1.el8_4.2 not affected
CISA ADP
from 0:3.3.3-6.el8_6.1 not affected
CISA ADP
from 0:3.3.3-6.el8_6.1 not affected
CISA ADP
from 0:3.5.3-5.el9_4 not affected
CISA ADP
from 412.86.202604281506-0 not affected
CISA ADP
from 7.13.5-4.1777325677 not affected
CISA ADP
Red Hat Red Hat AI Inference Server 3.2
redhat:ai_inference_server
from 1779223654 not affected
CISA ADP
from 1778101579 not affected
CISA ADP
from 3.8.7-1.hum1 not affected
CISA ADP
from 1776868961 not affected
CISA ADP
from 1776868774 not affected
CISA ADP
libarchive libarchive
libarchive:libarchive
all versions
NVD
redhat hardened_images
redhat:hardened_images
all versions
NVD
redhat openshift_container_platform
redhat:openshift_container_platform
4.0; 4.16
NVD
redhat openshift_container_platform_for_arm64
redhat:openshift_container_platform_for_arm64
4.16
NVD
redhat openshift_container_platform_for_power
redhat:openshift_container_platform_for_power
4.16
NVD
redhat enterprise_linux
redhat:enterprise_linux
6.0; 7.0; 8.0; 9.0; 10.0
NVD
redhat enterprise_linux_server_aus
redhat:enterprise_linux_server_aus
8.2; 8.4
NVD

References

  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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