CVE-2017-1000421: Debian Linux

Critical severity, CVSS 9.8. EPSS: 2.7% chance of exploitation in the next 30 days.

Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function resulting potential code execution

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only; version 9.0 only
• Lcdf Gifsicle: up to and including 1.89

Published 2018-01-02. Last modified 2026-06-17.