CVE-2021-44421: Occlum Project Occlum

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

The pointer-validation logic in util/mem_util.rs in Occlum before 0.26.0 for Intel SGX acts as a confused deputy that allows a local attacker to access unauthorized information via side-channel analysis.

Affected products

• Occlum Project Occlum: before 0.26.0 (fixed in 0.26.0)

Published 2022-03-10. Last modified 2026-06-17.