What is CVE-2026-14191?

CVE-2026-14191 is a high-severity vulnerability in Rarlab Rar, classified under Improper Validation of Array Index. CVSS score: 7.8/10. Published 2026-07-01.

How severe is CVE-2026-14191?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Rarlab Rar

CVE-2026-14191

An out-of-bounds heap write exists in the RAR5 recovery-volume (.rev) parser in WinRAR and UnRAR (RecVolumes5::ReadHeader in recvol5.cpp). The RecItems vector is sized only when the first .rev file in a set is processed; subsequent .rev fi…

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Rarlab Rar — versions 0
Rarlab Unrar — versions 0
Rarlab Unrar.dll — versions 0
Rarlab Winrar — versions 0

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index
CWE-787 — Out-of-bounds Write

References

33c584b5-0579-4c06-b2a0-8d8329fcab9c (vendor-advisory, patch)
33c584b5-0579-4c06-b2a0-8d8329fcab9c (related)

Frequently asked questions

What is CVE-2026-14191?: CVE-2026-14191 is a high-severity vulnerability in Rarlab Rar, classified under Improper Validation of Array Index. CVSS score: 7.8/10. Published 2026-07-01.
How severe is CVE-2026-14191?: High severity. CVSS v3 base score is 7.8 out of 10.