Security Resilience

CVE-2020-25213

Filemanagerpro File Manager ≤ 6.9

CISA KEVActive ExploitationEUVD ExploitedPublic PoC
Published
09 September 2020
Modified
07 November 2025
KEV Added
03 November 2021
Patch / advisory
CVSS Score v3.1 10.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.97 99.9th percentile
Risk Priority 100 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2020-25213 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Filemanagerpro File Manager. Its CVSS base score is 10.0 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 0.1% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

The File Manager (wp-file-manager) plugin before version 6.9 for WordPress contains an arbitrary file upload vulnerability tracked as CVE-2020-25213. The root cause is the plugin's renaming of an unsafe example elFinder connector file to a .php extension, which enables use of elFinder commands such as upload, mkfile, and put to write attacker-controlled PHP code into the wp-content/plugins/wp-file-manager/lib/files/ directory. The issue is classified under CWE-434 and carries a CVSS 3.1 base score of 10.0.

Unauthenticated remote attackers can exploit the flaw over the network to upload and execute arbitrary PHP, resulting in full compromise of confidentiality, integrity, and availability with scope change to other WordPress components. Public exploit code and Metasploit modules have been available since shortly after disclosure, lowering the barrier for mass compromise of unpatched sites.

The official mitigation is to update the plugin to version 6.9 or later, as reflected in the WordPress plugin repository changeset 2373068 that removed the vulnerable connector file. Multiple public advisories and proof-of-concept reports emphasize that sites remaining on earlier releases remain exposed until the update is applied.

The vulnerability saw active exploitation in the wild during August and September 2020, with observed campaigns leveraging it for website defacement and further malware deployment.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

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…

more

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.

CWE(s)
KEV Date Added
03 November 2021

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001 Data Obfuscation Command And Control
Adversaries may obfuscate command and control traffic to make it more difficult to detect.
T1001.003 Protocol or Service Impersonation Command And Control
Adversaries may impersonate legitimate protocols or web service traffic to disguise command and control activity and thwart analysis efforts.
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
T1011.001 Exfiltration Over Bluetooth Exfiltration
Adversaries may attempt to exfiltrate data over Bluetooth rather than the command and control channel.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-8918Same product: Filemanagerpro File Manager
CVE-2024-8746Same product: Filemanagerpro File Manager
CVE-2023-6846Same product: Filemanagerpro File Manager
CVE-2024-2654Same product: Filemanagerpro File Manager
CVE-2024-0761Same product: Filemanagerpro File Manager
CVE-2024-1538Same product: Filemanagerpro File Manager
CVE-2024-8507Same product: Filemanagerpro File Manager
CVE-2026-56290Shared CWE-434both on KEV
CVE-2016-3088Shared CWE-434both on KEV
CVE-2024-50623Shared CWE-434both on KEV

Affected Assets

filemanagerpro
file manager
≤ 6.9

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.1.1

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-434

Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.

addresses: CWE-434

Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.

addresses: CWE-434

Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.

addresses: CWE-434

Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-01 partial match
blocks

Hardened configuration baselines can enforce allowed file types and processing rules.

PR.PS-05 partial match
blocks

Restricting execution of unauthorized software directly blocks dangerous uploaded files from running.

PR.PS-06 partial match
blocks

Secure development practices include input validation and file-type restrictions that prevent this weakness.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

References