Security readout for executives and security teams
Plain-English summary
Akkadian PME’s restricted SSH shell could be bypassed by an already highly privileged user, allowing actions outside intended administrative limits. The impact is serious because confidentiality and integrity are rated high, but the issue requires privileged access and there is no source-provided evidence of active exploitation.
Executive priority
Treat this as a high-priority remediation for organizations using Akkadian provisioning infrastructure. It is not an unauthenticated internet worm risk, but compromise or misuse of privileged accounts could undermine sensitive provisioning systems.
Technical view
The flaw is a restricted-shell escape tied to OpenSSH channel handling. By using an exec-style channel rather than the normal shell channel, a high-privilege authenticated user could bypass shell restrictions. It is tracked as CWE-78 with CVSS 3.1 score 8.7, network reachable, low complexity, high privileges required, no user interaction.
Likely exposure
Exposure is most likely in environments running Akkadian Provisioning Manager Engine 4.50.18 or related Akkadian appliances below the fixed versions named by the CVE. Systems with SSH administrative access paths deserve priority review.
Exploitation context
The provided sources do not show known active exploitation, and the CVE is not listed as KEV in the bundle. Practical risk depends on who has privileged SSH access and whether those accounts can reach the PME host.
Researcher notes
Evidence supports a restricted-shell bypass with high confidentiality and integrity impact. The source bundle names affected PME 4.50.18 and fixed Akkadian versions, but does not provide broader version ranges, exploit telemetry, or detailed vendor mitigations beyond upgrading.
Mitigation direction
- Upgrade Akkadian OVA appliance to version 3.0 or later where applicable.
- Upgrade Akkadian Provisioning Manager to version 5.0.2 or later.
- Upgrade Akkadian Appliance Manager to 3.3.0.314-4a349e0 or later.
- Restrict SSH administrative access to trusted management networks.
- Review vendor guidance before applying compensating controls.
Validation and detection
- Inventory Akkadian PME and related appliance versions.
- Confirm whether PME 4.50.18 exists in production or backup environments.
- Verify installed versions meet or exceed the named fixed releases.
- Review privileged SSH account access and recent administrative activity.
- Document remediation status in the vulnerability management record.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-31580 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N2.35.8Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.7HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.rapid7.com/blog/post/2021/06/08/akkadian-provisioning-manager-multiple-vulnerabilities-disclosure/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.