What’s Vulnerable › Vulnerabilities

CVE-2021-31580: Akkadian Provisioning Manager Engine (PME) Shell Escape via 'exec' command

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-22 · updated 2026-06-17
• Weakness: CWE-78

Description

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; from 4.0.0 before 5.0.2 — fixed in 3.3.0.314-4a349e0, 5.0.2

How to fix

Upgrade to a fixed version: Akkadianlabs Ova Appliance 3.0; Akkadianlabs Provisioning Manager 3.3.0.314-4a349e0, 5.0.2. Check the vendor advisory for mitigations.

References

• https://www.rapid7.com/blog/post/2021/06/08/akkadian-provisioning-manager-multiple-vulnerabilities-disclosure/
• https://www.rapid7.com/blog/post/2021/06/08/akkadian-provisioning-manager-multiple-vulnerabilities-disclosure/

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