CVE-2026-121942

MediumCVSS 6.1/10Last modified Nov 4, 2026

Description

ZBar through 0.23.95 contains an out-of-bounds read vulnerability in _zbar_sq_decode() in zbar/sqcode.c that allows attackers to read heap memory outside the image buffer via crafted SQ code images. Attackers can supply an image with a skewed SQ code finder pattern near the edge, producing unchecked sample coordinates that crash the decoder and leak bytes into output.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
mchehab	zbar	<= 0.23.95

References

Timeline

Published: Nov 4, 2026
Last modified: Nov 4, 2026
NVD status: Deferred

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