An unauthenticated remote command execution vulnerability exists in AjaXplorer (now known as Pydio Cells) versions prior to 2.6. The flaw resides in the checkInstall.php script within the access.ssh plugin, which fails to properly sanitize user-supplied input to the destServer GET parameter. By injecting shell metacharacters, remote attackers can execute arbitrary system commands on the server with the privileges of the web server process.
Security readout for executives and security teams
Plain-English summary
This is a critical flaw in old AjaXplorer installations that can let an unauthenticated attacker run operating-system commands through a vulnerable installation-check script. Business risk is highest where legacy AjaXplorer remains exposed to the internet. The bundle does not show confirmed active exploitation, but public exploit references exist.
Executive priority
Treat as urgent for any organization still running legacy AjaXplorer. Prioritize internet-facing systems first. If no AjaXplorer exists, document non-exposure and monitor asset inventory rather than launching broad emergency work.
Technical view
The bundle describes CWE-78 command injection in AjaXplorer before 2.6. The access.ssh plugin's checkInstall.php fails to sanitize destServer input, allowing unauthenticated remote command execution as the web server user. CVSS 4.0 is 9.3 critical. Affected-version metadata is inconsistent, so verify against deployed versions and vendor guidance.
Likely exposure
Likely exposure is legacy, internet-facing AjaXplorer before 2.6, especially if the access.ssh plugin and checkInstall.php are reachable. Modern Pydio Cells exposure is not established by the bundle.
Exploitation context
CISA KEV status is false, and the provided sources do not state active exploitation. Exploit-DB and Metasploit references indicate public exploit availability, increasing urgency for any remaining legacy deployments.
Researcher notes
Evidence supports unauthenticated RCE in AjaXplorer before 2.6, but the CVE affected metadata in the bundle lists an unclear version value and default unaffected status. Do not infer impact for Pydio Cells without separate vendor evidence.
Mitigation direction
Upgrade AjaXplorer to 2.6 or later if that is supported in your environment.
Check current vendor or successor-project guidance before applying assumptions to Pydio Cells.
Disable or remove the access.ssh plugin if it is not required.
Restrict public access to legacy AjaXplorer until remediation is complete.
Retire unsupported AjaXplorer deployments where upgrade paths are unavailable.
Validation and detection
Inventory internet-facing hosts for AjaXplorer installations.
Confirm deployed AjaXplorer versions and flag anything before 2.6.
Check whether access.ssh/checkInstall.php is present and externally reachable.
Review web logs for suspicious requests to checkInstall.php and destServer.
Use approved vulnerability scanners, including relevant Tenable coverage, for confirmation.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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 · medium confidence lookup
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.
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
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.
1CVSS vectors
3Timeline events
1ADP providers
6Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: yesTechnical Impact: total
CVSS vector scores
1 official score
We 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.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-78 · source CWE mapping
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.