CVE-2021-39554

5.5 mediumEPSS 0.6%

Medium (5.5) in swftools swftools. EPSS 0.6% chance of exploitation in the next 30 days.

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

Severity

CVSS 3.1

5.5 medium

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE: CWE-476
Published: 2021-09-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

swftools:swftools

References

https://github.com/matthiaskramm/swftools/issues/100
https://github.com/matthiaskramm/swftools/issues/100

Check your stack JSON