CVE-2017-5627: Artifex Mujs

High severity, CVSS 7.8. EPSS: 1.3% chance of exploitation in the next 30 days.

An issue was discovered in Artifex Software, Inc. MuJS before 4006739a28367c708dea19aeb19b8a1a9326ce08. The jsR_setproperty function in jsrun.c lacks a check for a negative array length. This leads to an integer overflow in the js_pushstring function in jsrun.c when parsing a specially crafted JS file.

Affected products

• Artifex Mujs: before 2017-01-24 (fixed in 2017-01-24)

Published 2017-01-30. Last modified 2026-06-17.