What is CVE-2021-42203?

CVE-2021-42203 is a high-severity vulnerability in Swftools, classified under Use After Free. CVSS score: 7.8/10. Published 2022-06-02.

How severe is CVE-2021-42203?

High severity. CVSS v3 base score is 7.8 out of 10.

Use After Free in Swftools

CVE-2021-42203

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.

Vulnerability class: Use-After-Free

EPSS: 0.011 (63.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Swftools
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-42203?: CVE-2021-42203 is a high-severity vulnerability in Swftools, classified under Use After Free. CVSS score: 7.8/10. Published 2022-06-02.
How severe is CVE-2021-42203?: High severity. CVSS v3 base score is 7.8 out of 10.