CVE-2021-42202: Swftools

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in swftools through 20201222. A NULL pointer dereference exists in the function swf_DeleteFilter() located in swffilter.c. It allows an attacker to cause Denial of Service.

Affected products

• Swftools Swftools: up to and including 2020-12-22

Published 2022-06-02. Last modified 2026-06-17.