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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

References

References

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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