What’s Vulnerable › Vulnerabilities

CVE-2021-33797

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-17 · updated 2026-06-17
• Weakness: CWE-119

Description

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

• MuJS: from 1.0.1 through 1.1.1

References

• https://github.com/ccxvii/mujs/commit/833b6f1672b4f2991a63c4d05318f0b84ef4d550
• https://github.com/ccxvii/mujs/issues/148
• https://github.com/ccxvii/mujs/commit/833b6f1672b4f2991a63c4d05318f0b84ef4d550
• https://github.com/ccxvii/mujs/issues/148
• https://github.com/ccxvii/mujs/issues/148

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