Is there a public exploit for CVE-2026-121942?

No public exploit for CVE-2026-121942 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-121942?

CVE-2026-121942 scores CVSS 6.9 (v4.0), rated medium.

What does CVE-2026-121942 affect?

CVE-2026-121942 affects mchehab zbar.

6.9 Medium

ZBar through 0.23.95 contains an out-of-bounds read vulnerability in zbarsqdecode() in zbar/sqcode.c that allows attackers to read heap…

CVE-2026-121942

ZBar through 0.23.95 contains an out-of-bounds read vulnerability in zbarsqdecode() 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.

Assessment

CVSS: 6.9 (v4.0)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 4 November 2026
Last updated: 4 November 2026
Affected: mchehab · zbar
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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