CVE-2026-121942 (GCVE-0-2026-121942)
Vulnerability from cvelistv5 – Published: 2026-11-04 12:31 – Updated: 2026-11-04 18:53
VLAI
EPSS
VEX
Title
ZBar through 0.23.95 Out-of-Bounds Read via _zbar_sq_decode() in sqcode.c
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 18:52 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
VulnCheck
CNA
References
5 references
| URL | Tags |
|---|---|
| https://github.com/mchehab/zbar/issues/351 | issue-tracking |
| https://hackmd.io/@haindpwn/zbar-sqcode-sampling-… | third-party-advisory |
| https://github.com/mchehab/zbar/blob/0.23.95/zbar… | technical-description |
| https://www.vulncheck.com/advisories/zbar-through… | third-party-advisory |
| https://hackmd.io/@haindpwn/cve-2026-121942-zbar-… | exploit |
Date Public
2026-10-22 02:11
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