Security readout for executives and security teams
Plain-English summary
Pydio 8.2.1 and earlier can allow operating-system command execution through the antivirus plugin when an attacker can change the antivirus command setting and trigger a scan by uploading a file. This is serious because it can turn application-level access into control of the server. The bundle does not show active exploitation or an official fix.
Executive priority
Prioritize validation on internet-facing or business-critical Pydio systems. If affected versions and antivirus plugin use are confirmed, treat remediation as urgent because successful abuse can lead to server-level compromise.
Technical view
The reported flaw is unvalidated user input in plugins/action.antivirus/AntivirusScanner.php, scanNow($nodeObject). The cited description says the antivirus command can be edited and then executed during file upload scanning, resulting in arbitrary OS command execution. The required access level is not fully detailed, but the described path involves antivirus plugin configuration control.
Likely exposure
Organizations running Pydio 8.2.1 or earlier are potentially exposed, especially where the antivirus plugin is enabled and administrative or plugin-configuration access is broadly delegated. Exposure cannot be confirmed from version alone without checking plugin use and permissions.
Exploitation context
The source bundle describes a configuration-change and file-upload trigger path. It does not cite public exploitation in the wild, and the CVE is not marked as CISA KEV. Treat exploitation status as unconfirmed from the provided evidence.
Researcher notes
The record lacks CVSS, CWE, affected CPEs, and named vendor remediation in the provided bundle. The main uncertainty is the required privilege level; the described exploit path appears to require access to edit antivirus plugin configuration.
Mitigation direction
- Inventory Pydio instances and identify versions 8.2.1 or earlier.
- Check vendor guidance for supported fixes or upgrade paths.
- Restrict Pydio administrative and plugin-configuration access to trusted administrators.
- Disable or restrict the antivirus plugin if business operations allow.
- Review server hardening around the Pydio web process privileges.
Validation and detection
- Confirm whether any Pydio instance runs version 8.2.1 or earlier.
- Verify whether the antivirus plugin is enabled on affected systems.
- Review who can modify the antivirus command setting.
- Inspect audit logs for antivirus configuration changes.
- Review file-upload and server process logs for suspicious scan activity.
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.
Execution behavior lookup
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.
Open ATT&CK lookupCVE-2018-1999018 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.mike-gualtieri.com/files/Pydio-8-VulnerabilityDisclosure-Jul18.txtCVE 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.