MEDIUM 6.9 NVD
CVE-2026-121942
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 im
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.
References
- https://github.com/mchehab/zbar/blob/0.23.95/zbar/sqcode.c#L529-L567
- https://github.com/mchehab/zbar/issues/351
- https://hackmd.io/@haindpwn/zbar-sqcode-sampling-oob-read
- https://www.vulncheck.com/advisories/zbar-through-0.23.95-out-of-bounds-read-via-zbar-sq-d
- https://hackmd.io/@haindpwn/cve-2026-121942-zbar-sqcode-sampling-oob-read
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-11-04 via NVD.
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