{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"mchehab/zbar","product":"zbar","source":"CNA: VulnCheck","vendor":"mchehab","versions":[{"lessThanOrEqual":"0.23.95","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-121942","cwes":["CWE-125"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.9,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":6.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","version":"3.1"}],"modifiedAt":1793795480522,"publishedAt":1793795480522,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/mchehab/zbar/issues/351"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://hackmd.io/@haindpwn/zbar-sqcode-sampling-oob-read"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/mchehab/zbar/blob/0.23.95/zbar/sqcode.c#L529-L567"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/zbar-through-0.23.95-out-of-bounds-read-via-zbar-sq-decode-in-sqcode-c"}],"remediation":[],"revision":"301d77aff67cfd5c4c86b63e4b1033fbb91e6457378ce907dd00b92acc1588be","sources":[{"modifiedAt":1793795480522,"name":"CNA: VulnCheck","retrievedAt":1793797813013,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121942"}],"ssvc":null,"status":"published","title":"ZBar through 0.23.95 Out-of-Bounds Read via _zbar_sq_decode() in sqcode.c","updatedAt":1793797813013}