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TI-2021-09192 Aliases CVE-2021-27799GHSA-rr98-pccv-8m4w

ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.9.1 has a stack-based…

Priority LOW 37CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.02365 83rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:zint:barcode_generator:2.9.1:*:*:*:*:*:*:*2.9.1VulnerableZint
  • cpe:2.3:a:zint:barcode_generator:2.9.1:*:*:*:*:*:*:* Versions 2.9.1 Vulnerable ·Zint

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27799
  2. 2026-10-03 Alias added: GHSA-rr98-pccv-8m4w

References

Exploit 1

Patch 1

Advisory 3

  • TI-2021-16632 Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to… CVSS 3.1MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences