CVE-2026-121942
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductZBar
PublishedNov 4, 2026
First seenNov 4, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ZBar | v ≤ 0.23.95 | — |
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