CVE-2021-32611: Antisip EXOSIP2

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

A NULL pointer dereference vulnerability exists in eXcall_api.c in Antisip eXosip2 through 5.2.0 when handling certain 3xx redirect responses.

Affected products

• Antisip EXOSIP2: up to and including 5.2.0

Published 2021-05-12. Last modified 2026-06-17.