CVE-2021-44758: Heimdal Project Heimdal

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept.

Affected products

• Heimdal Project Heimdal: before 7.7.1 (fixed in 7.7.1)

Published 2022-12-26. Last modified 2026-06-17.