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TI-2021-16632 Aliases CVE-2021-39247GHSA-93xv-rpmh-3262

Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to…

Priority LOW 31CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
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-125 and the CVSS impact.

Summary

Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to is_last_single_ascii in code1.c, and rs_encode_uint in reedsol.c.

Why it matters now

EPSS 0.00922 60th 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:*:*:*:*:*:*:*:*before 2.10.0VulnerableZint
  • cpe:2.3:a:zint:barcode_generator:*:*:*:*:*:*:*:* Versions before 2.10.0 Vulnerable ·Zint

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-39247
  2. 2026-10-03 Alias added: GHSA-93xv-rpmh-3262

References

Exploit 1

Patch 1

  • TI-2021-09192 ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.9.1 has a stack-based… CVSS 3.1HIGH 7.5

Sources

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