CVE-2026-79896: Fortra Boks Manager

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restarted automatically, repeated requests can sustain the service interruption.

Affected products

• Fortra Boks Manager: from 8.1.0.0, up to and including 8.1.0.23; from 9.0.0.0, up to and including 9.0.0.6

Published 2026-10-01. Last modified 2026-10-01.