CVE-2020-5940
MEDIUMCVSS 5.4/10EPSS 0.52%
Last modified
CVE-2020-5940 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. In versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, and 14.1.0-14.1.2.3, a stored cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Traffic Management User Interface (TMUI), also known as the BIG-IP Configuration utility.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.
Description
In versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, and 14.1.0-14.1.2.3, a stored cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Traffic Management User Interface (TMUI), also known as the BIG-IP Configuration utility.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Access Policy Manager | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Access Policy Manager | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Advanced Firewall Manager | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Advanced Firewall Manager | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Analytics | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Analytics | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Analytics | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Application Acceleration Manager | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Application Acceleration Manager | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Application Security Manager | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Application Security Manager | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Application Security Manager | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Domain Name System | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Domain Name System | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Domain Name System | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Edge Gateway | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Edge Gateway | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Edge Gateway | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Fraud Protection Service | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Fraud Protection Service | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Fraud Protection Service | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Global Traffic Manager | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Global Traffic Manager | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Global Traffic Manager | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Link Controller | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Link Controller | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Link Controller | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Local Traffic Manager | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Local Traffic Manager | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Local Traffic Manager | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Policy Enforcement Manager | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Policy Enforcement Manager | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Policy Enforcement Manager | >= 16.0.0, < 16.0.1 |
| F5 | Big-Ip Webaccelerator | >= 14.1.0, < 14.1.2.4 |
| F5 | Big-Ip Webaccelerator | >= 15.1.0, < 15.1.1 |
| F5 | Big-Ip Webaccelerator | >= 16.0.0, < 16.0.1 |
References
- https://support.f5.com/csp/article/K43310520Vendor Advisory
- https://support.f5.com/csp/article/K43310520Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-5940?
In versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, and 14.1.0-14.1.2.3, a stored cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Traffic Management User Interface (TMUI), also known as the BIG-IP Configuration utility.
How severe is CVE-2020-5940?
CVE-2020-5940 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5940?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-5934On BIG-IP APM 15.1.0-15.1.0.5, 14.1.0-14.1.2.3, and 13.1.0-1…6.5
- CVE-2020-5935On BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, FPS, GTM…5.9
- CVE-2020-5936On BIG-IP LTM 15.1.0-15.1.0.5, 14.1.0-14.1.2.7, 13.1.0-13.1.…7.5
- CVE-2020-5937On BIG-IP AFM 15.1.0-15.1.0.5, the Traffic Management Microk…7.5
- CVE-2020-5938On BIG-IP 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.…6.5
- CVE-2020-5939In versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.3, 15.0.0-15.0.1.…7.5
- CVE-2020-5941On BIG-IP versions 16.0.0-16.0.0.1 and 15.1.0-15.1.0.5, usin…7.5
- CVE-2020-5942In BIG-IP PEM versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.…7.5
- CVE-2020-5943In versions 14.1.0-14.1.0.1 and 14.1.2.5-14.1.2.7, when a BI…6.5
- CVE-2020-5944In BIG-IQ 7.1.0, accessing the DoS Summary events and DNS Ov…4.3
- CVE-2020-5945In BIG-IP versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, and 14.…8.4
- CVE-2020-5946In BIG-IP Advanced WAF and FPS versions 16.0.0-16.0.0.1, 15.…7.5
Are you affected by CVE-2020-5940?
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