CVE-2021-42203

HIGH

swftools < 2020-12-22 - Use-After-Free in swf_FontExtract_DefineTextCallback

Title source: llm
STIX 2.1

Description

An issue was discovered in swftools through 20201222. A heap-use-after-free exists in the function swf_FontExtract_DefineTextCallback() located in swftext.c. It allows an attacker to cause code execution.

References (1)

Core 1
Core References
Exploit, Third Party Advisory x_refsource_misc
https://github.com/matthiaskramm/swftools/issues/176

Scores

CVSS v3 7.8
EPSS 0.0111
EPSS Percentile 62.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (1)
swftools/swftools < 2020-12-22
Published Jun 02, 2022
Tracked Since Feb 18, 2026