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TI-2021-20917 Aliases CVE-2021-45908GHSA-7c52-4c49-68xc

An issue was discovered in gif2apng 1.9.

Priority LOW 35CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · 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

An issue was discovered in gif2apng 1.9. There is a stack-based buffer overflow involving a while loop. An attacker has little influence over the data written to the stack, making it unlikely that the flow of control can be subverted.

Why it matters now

EPSS 0.00755 55th 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:gif2apng_project:gif2apng:1.9:*:*:*:*:*:*:*1.9VulnerableGif2apng Project
  • cpe:2.3:a:gif2apng_project:gif2apng:1.9:*:*:*:*:*:*:* Versions 1.9 Vulnerable ·Gif2apng Project

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-45908
  2. 2026-10-03 Alias added: GHSA-7c52-4c49-68xc

References

Exploit 1

  • TI-2021-20920 An issue was discovered in gif2apng 1.9. CVSS 3.1HIGH 7.8
  • TI-2021-20919 An issue was discovered in gif2apng 1.9. CVSS 3.1HIGH 7.8
  • TI-2021-20918 An issue was discovered in gif2apng 1.9. CVSS 3.1HIGH 7.8
  • TI-2021-20916 An issue was discovered in gif2apng 1.9. CVSS 3.1HIGH 7.8

Sources

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