Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 97.3%; technical severity is CVSS 9.8.
The File Manager (wp-file-manager) plugin before 6.9 for WordPress allows remote attackers to upload and execute arbitrary PHP code because it renames an unsafe example elFinder connector file to have the .php extension. This, for example, allows attackers to run the elFinder upload (or mkfile and put) command to write PHP code into the wp-content/plugins/wp-file-manager/lib/files/ directory. This was exploited in the wild in August and September 2020.
Who should care
- Teams operating File Manager, File Manager Plugin
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether File Manager, File Manager Plugin is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Apply updates per vendor instructions.
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Vendor remediation
Patch and remediation links
Use the vendor source below to confirm the correct fixed version, package or mitigation for your affected product.
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-434
- Affected versions
- Filemanagerpro File Manager (End Excluding: 6.9); WordPress File Manager Plugin
- Published
- 9 September 2020
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 97.3%
- Signal calculated at 85
External references
- Government advisory from www.cisa.gov
- Exploit information from packetstormsecurity.com
- Exploit information from packetstormsecurity.com
- Exploit information from github.com
- Third-party advisory from hotforsecurity.bitdefender.com
- Exploit information from seravo.com
- Exploit information from wordfence.com
- Release notes from wordpress.org
- Technical reference from zdnet.com