CVE-2021-27799

medium
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
5.5

Description

ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.9.1 has a stack-based buffer overflow that is reachable from the C API through an application that includes the Zint Barcode Generator library code.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-27799

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202106-13

OS impact

OSVersionStatusFixed in
arch archfixed2.9.1-2
debian debianbookwormfixed2.9.1-1.1
debian debianbullseyefixed2.9.1-1.1
debian debianforkyfixed2.9.1-1.1
debian debiansidfixed2.9.1-1.1
debian debiantrixiefixed2.9.1-1.1

References

Verify integrity in audit chain (admin only). AS-IS.