CVE-2020-5902 CISA KEV — actively exploited Ransomware-linked

F5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution Vulnerability

n/a — BIG-IP

In BIG-IP versions 15.0.0-15.1.0.3, 14.1.0-14.1.2.5, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, the Traffic Management User Interface (TMUI), also referred to as the Configuration utility, has a Remote Code Execution (RCE) vulnerability in undisclosed pages.

CVSS scoreCritical

9.8

EPSS — exploitation probabilityCritical

100.0%

Vector breakdown

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published: Jul 1, 2020
Modified: Jun 17, 2026
Added to KEV: Nov 3, 2021
Federal patch due: May 3, 2022

CISA required action

Apply updates per vendor instructions.

Weakness classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory

Affected packages

unknown packageunknown

GHSA-2859-2hr6-f86v

Proof-of-concept & exploitation references

8 found

Weaponization

Nuclei template

Available

Metasploit module

Not found

Public repositories whose name or description references CVE-2020-5902, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.

References

How this class of flaw gets exploited

Path Traversal (Directory Traversal)

Frequently asked questions

What is CVE-2020-5902?

How severe is CVE-2020-5902?

CVE-2020-5902 has a CVSS base score of 9.8 out of 10 (CVSS 3.1).

Is CVE-2020-5902 actively exploited in the wild?

Yes. CVE-2020-5902 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Nov 3, 2021, meaning CISA has confirmed evidence of active exploitation. It is also flagged as used in ransomware campaigns.

What is the EPSS score for CVE-2020-5902?

100.0% - meaning FIRST.org's EPSS model estimates a 100.0% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).

Is there exploit tooling available for CVE-2020-5902?

Yes - a public Nuclei template referencing CVE-2020-5902 exist in public repositories we checked. We also found 8 public GitHub repositories referencing this CVE.

What type of vulnerability is CVE-2020-5902?

CVE-2020-5902 is classified under CWE-22 (CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')).

Cross-checked against

Impactr finds and proves whether CVE-2020-5902 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.

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