CVE-2020-5948
CRITICALCVSS 9.6/10EPSS 0.98%
Last modified
CVE-2020-5948 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. On BIG-IP versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.2.7, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, undisclosed endpoints in iControl REST allow for a reflected XSS attack, which could lead to a complete compromise of the BIG-IP system if the victim user is granted the admin role.. EPSS estimates a 0.98% chance of exploitation in the next 30 days.
Description
On BIG-IP versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.2.7, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, undisclosed endpoints in iControl REST allow for a reflected XSS attack, which could lead to a complete compromise of the BIG-IP system if the victim user is granted the admin role.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Advanced Firewall Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Analytics | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Application Acceleration Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Application Security Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Domain Name System | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Fraud Protection Service | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Global Traffic Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Link Controller | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Local Traffic Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Policy Enforcement Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Access Policy Manager | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Analytics | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Application Security Manager | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Domain Name System | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Fraud Protection Service | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Global Traffic Manager | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Link Controller | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Local Traffic Manager | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Policy Enforcement Manager | >= 14.1.0, < 14.1.2.8 |
| F5 | Big-Ip Access Policy Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Advanced Firewall Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Analytics | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Application Acceleration Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Application Security Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Domain Name System | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Fraud Protection Service | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Global Traffic Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Link Controller | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Local Traffic Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Policy Enforcement Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Access Policy Manager | 16.0.0 |
| F5 | Big-Ip Advanced Firewall Manager | 16.0.0 |
| F5 | Big-Ip Analytics | 16.0.0 |
| F5 | Big-Ip Application Acceleration Manager | 16.0.0 |
| F5 | Big-Ip Application Security Manager | 16.0.0 |
| F5 | Big-Ip Domain Name System | 16.0.0 |
| F5 | Big-Ip Fraud Protection Service | 16.0.0 |
| F5 | Big-Ip Global Traffic Manager | 16.0.0 |
| F5 | Big-Ip Link Controller | 16.0.0 |
| F5 | Big-Ip Local Traffic Manager | 16.0.0 |
| F5 | Big-Ip Policy Enforcement Manager | 16.0.0 |
References
- https://support.f5.com/csp/article/K42696541Vendor Advisory
- https://support.f5.com/csp/article/K42696541Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-5948?
On BIG-IP versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.2.7, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, undisclosed endpoints in iControl REST allow for a reflected XSS attack, which could lead to a complete compromise of the BIG-IP system if the victim user is granted the admin role.
How severe is CVE-2020-5948?
CVE-2020-5948 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.98% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5948?
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.
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Are you affected by CVE-2020-5948?
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