VULNERABILITY INTELLIGENCE

CVE-2021-39557

CVSS score5.5 MEDIUM

EPSS probability0.64%

CISA KEVNot currently listed

Published2021-09-20

Last modified2026-06-17

Description

An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function copyString() located in gmem.cc. It allows an attacker to cause Denial of Service.