CVE-2020-5902
KEVRansomware UseF5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution Vulnerability
Description
F5 BIG-IP Traffic Management User Interface (TMUI) contains a remote code execution vulnerability in undisclosed pages.
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 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedJul 1, 2020
Last modifiedJun 17, 2026
Added to KEVNov 3, 2021
Remediation dueMay 3, 2022
References
- packetstormsecurity.com/files/158333/BIG-IP-TMUI-Remote-Code-Execution.htmlExploitThird Party Advisory
- packetstormsecurity.com/files/158334/BIG-IP-TMUI-Remote-Code-Execution.htmlThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/158366/F5-BIG-IP-TMUI-Directory-Traversal-File-Upload-Code-Execution.htmlExploitThird Party Advisory
- packetstormsecurity.com/files/158414/Checker-CVE-2020-5902.htmlThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/158581/F5-Big-IP-13.1.3-Build-0.0.6-Local-File-Inclusion.htmlExploitThird Party Advisory
- packetstormsecurity.com/files/175671/F5-BIG-IP-TMUI-Directory-Traversal-File-Upload-Code-Execution.htmlExploitThird Party Advisory
- badpackets.net/over-3000-f5-big-ip-endpoints-vulnerable-to-cve-2020-5902/ExploitThird Party Advisory
- github.com/Critical-Start/Team-Ares/tree/master/CVE-2020-5902Broken LinkExploit
- support.f5.com/csp/article/K52145254Vendor Advisory
- swarm.ptsecurity.com/rce-in-f5-big-ip/ExploitThird Party Advisory
- criticalstart.com/f5-big-ip-remote-code-execution-exploit/ExploitThird Party Advisory
- kb.cert.org/vuls/id/290915Third Party AdvisoryUS Government Resource
0 recent articles mention this CVE
99
Risk assessment · Critical
Actively exploited and used by ransomware crews. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1637 days
- Ransomware
- Used in known ransomware campaigns
- CVSS
- 9.8 CRITICAL
- EPSS (30-day exploit probability)
- 100.0% · top 1% of all CVEs
- Weakness
- CWE-22
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
- 5.Verify offline/immutable backups and segment the affected systems. This flaw is used for ransomware initial access.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.