CVE-2021-39532: Juniper Libslax

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in libslax through v0.22.1. A NULL pointer dereference exists in the function slaxLexer() located in slaxlexer.c. It allows an attacker to cause Denial of Service.

Affected products

• Juniper Libslax: up to and including 0.22.1

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