CVE-2021-31580: Akkadianlabs Ova Appliance

Critical severity, CVSS 9.8. EPSS: 3% chance of exploitation in the next 30 days.

The restricted shell provided by Akkadian Provisioning Manager Engine (PME) can be bypassed by switching the OpenSSH channel from `shell` to `exec` and providing the ssh client a single execution parameter. This issue was resolved in Akkadian OVA appliance version 3.0 (and later), Akkadian Provisioning Manager 5.0.2 (and later), and Akkadian Appliance Manager 3.3.0.314-4a349e0 (and later).

Affected products

• Akkadianlabs Ova Appliance: before 3.0 (fixed in 3.0)
• Akkadianlabs Provisioning Manager: from 3.0.0, before 3.3.0.314-4a349e0 (fixed in 3.3.0.314-4a349e0); from 4.0.0, before 5.0.2 (fixed in 5.0.2)

Published 2021-07-22. Last modified 2026-06-17.