NULL pointer dereference in Swftools

CVE-2021-42198

An issue was discovered in swftools through 20201222. A NULL pointer dereference exists in the function swf_GetBits() located in rfxswf.c. It allows an attacker to cause Denial of Service.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (51.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-42198: held from 0.007 to 0.007.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-42198?
CVE-2021-42198 is a medium-severity vulnerability in Swftools, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-06-02.
How severe is CVE-2021-42198?
Medium severity. CVSS v3 base score is 5.5 out of 10.