CVE-2021-39533: Juniper Libslax

High severity, CVSS 8.8. EPSS: 1.3% chance of exploitation in the next 30 days.

An issue was discovered in libslax through v0.22.1. slaxLexer() in slaxlexer.c has a heap-based buffer overflow.

Affected products

• Juniper Libslax: up to and including 0.22.1

Published 2021-09-20. Last modified 2026-06-17.