CVE-2021-33797: Artifex Mujs

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Buffer-overflow in jsdtoa.c in Artifex MuJS in versions 1.0.1 to 1.1.1. An integer overflow happens when js_strtod() reads in floating point exponent, which leads to a buffer overflow in the pointer *d.

Affected products

• Artifex Mujs: from 1.0.1, up to and including 1.1.1

Published 2023-04-17. Last modified 2026-06-17.