What is CVE-2020-22885?

CVE-2020-22885 is a high-severity vulnerability in Artifex Mujs, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-07-13.

How severe is CVE-2020-22885?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Artifex Mujs

CVE-2020-22885

Buffer overflow vulnerability in mujs before 1.0.8 due to recursion in the GC scanning phase, allows remote attackers to cause a denial of service.

Vulnerability class: Buffer Overflow

Published 2021-07-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Artifex Mujs

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/ccxvii/mujs/issues/133 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-22885?: CVE-2020-22885 is a high-severity vulnerability in Artifex Mujs, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-07-13.
How severe is CVE-2020-22885?: High severity. CVSS v3 base score is 7.5 out of 10.