Akkadian Provisioning Manager Engine (PME) Shell Escape via 'exec' command
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.
Summary
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).
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Akkadian | Provisioning Manager Engine (PME) | 4.50.18 – 4.50.18 | — | No fix listed | CNA |
- Provisioning Manager Engine (PME) VendorAkkadian Affected 4.50.18 – 4.50.18 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-31580
- 2026-10-03 Alias added: GHSA-8892-4233-8xfv
References
More Akkadian Ova Appliance vulnerabilities
- TI-2021-11688 Akkadian Provisioning Manager Engine (PME) Hard-Coded Credentials CVSS 3.1CRITICAL 9.8
- TI-2021-11690 Akkadian Provisioning Manager Engine (PME) Shell Escape via 'vi' editor interface CVSS 3.1HIGH 7.9
Sources
- CVE-2021-31580 · CVE Program
- CVE-2021-31580 · NVD
- FIRST EPSS
- GHSA-8892-4233-8xfv · GitHub Advisory Database · CC BY 4.0
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