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High severity7.8NVD Advisory· Published Jun 2, 2022· Updated Jun 17, 2026

CVE-2021-42203

CVE-2021-42203

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.

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Affected products

3
  • Swftools/Swftools3 versions
    cpe:2.3:a:swftools:swftools:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:swftools:swftools:*:*:*:*:*:*:*:*range: <=2020-12-22
    • (no CPE)
    • (no CPE)range: <=20201222

Patches

Vulnerability mechanics

References

1

News mentions

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