CVE-2020-5913
HIGHCVSS 7.4/10EPSS 0.50%
Last modified
CVE-2020-5913 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. In versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.2, the BIG-IP Client or Server SSL profile ignores revoked certificates, even when a valid CRL is present. This impacts SSL/TLS connections and may result in a man-in-the-middle attack on the connections.. EPSS estimates a 0.50% chance of exploitation in the next 30 days.
Description
In versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.2, the BIG-IP Client or Server SSL profile ignores revoked certificates, even when a valid CRL is present. This impacts SSL/TLS connections and may result in a man-in-the-middle attack on the connections.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 11.6.1, < 11.6.5 |
| F5 | Big-Ip Access Policy Manager | >= 12.1.0, < 12.1.5.2 |
| F5 | Big-Ip Access Policy Manager | >= 13.1.0, < 13.1.3 |
| F5 | Big-Ip Access Policy Manager | >= 14.1.0, < 14.1.2-0.89.37 |
| F5 | Big-Ip Access Policy Manager | >= 14.1.2.1, < 14.1.2.5 |
| F5 | Big-Ip Access Policy Manager | >= 15.0.0, < 15.0.1.2 |
| F5 | Big-Ip Advanced Firewall Manager | >= 11.6.1, < 11.6.5 |
| F5 | Big-Ip Advanced Firewall Manager | >= 12.1.0, < 12.1.5.2 |
| F5 | Big-Ip Advanced Firewall Manager | >= 13.1.0, < 13.1.3 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.1.0, < 14.1.2-0.89.37 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.1.2.1, < 14.1.2.5 |
| F5 | Big-Ip Advanced Firewall Manager | >= 15.0.0, < 15.0.1.2 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 11.6.1, < 11.6.5 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 12.1.0, < 12.1.5.2 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 13.1.0, < 13.1.3 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 14.1.0, < 14.1.2-0.89.37 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 14.1.2.1, < 14.1.2.5 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 15.0.0, < 15.0.1.2 |
| F5 | Big-Ip Analytics | >= 11.6.1, < 11.6.5 |
| F5 | Big-Ip Analytics | >= 12.1.0, < 12.1.5.2 |
| F5 | Big-Ip Analytics | >= 13.1.0, < 13.1.3 |
| F5 | Big-Ip Analytics | >= 14.1.0, < 14.1.2-0.89.37 |
| F5 | Big-Ip Analytics | >= 14.1.2.1, < 14.1.2.5 |
| F5 | Big-Ip Analytics | >= 15.0.0, < 15.0.1.2 |
| F5 | Big-Ip Application Acceleration Manager | >= 11.6.1, < 11.6.5 |
| F5 | Big-Ip Application Acceleration Manager | >= 12.1.0, < 12.1.5.2 |
| F5 | Big-Ip Application Acceleration Manager | >= 13.1.0, < 13.1.3 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.1.0, < 14.1.2-0.89.37 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.1.2.1, < 14.1.2.5 |
| F5 | Big-Ip Application Acceleration Manager | >= 15.0.0, < 15.0.1.2 |
| F5 | Big-Ip Application Security Manager | >= 11.6.1, < 11.6.5 |
| F5 | Big-Ip Application Security Manager | >= 12.1.0, < 12.1.5.2 |
| F5 | Big-Ip Application Security Manager | >= 13.1.0, < 13.1.3 |
| F5 | Big-Ip Application Security Manager | >= 14.1.0, < 14.1.2-0.89.37 |
| F5 | Big-Ip Application Security Manager | >= 14.1.2.1, < 14.1.2.5 |
| F5 | Big-Ip Application Security Manager | >= 15.0.0, < 15.0.1.2 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 11.6.1, < 11.6.5 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 12.1.0, < 12.1.5.2 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 13.1.0, < 13.1.3 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 14.1.0, < 14.1.2-0.89.37 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 14.1.2.1, < 14.1.2.5 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 15.0.0, < 15.0.1.2 |
| F5 | Big-Ip Domain Name System | >= 11.6.1, < 11.6.5 |
| F5 | Big-Ip Domain Name System | >= 12.1.0, < 12.1.5.2 |
| F5 | Big-Ip Domain Name System | >= 13.1.0, < 13.1.3 |
| F5 | Big-Ip Domain Name System | >= 14.1.0, < 14.1.2-0.89.37 |
| F5 | Big-Ip Domain Name System | >= 14.1.2.1, < 14.1.2.5 |
| F5 | Big-Ip Domain Name System | >= 15.0.0, < 15.0.1.2 |
| F5 | Big-Ip Fraud Protection Service | >= 11.6.1, < 11.6.5 |
| F5 | Big-Ip Fraud Protection Service | >= 12.1.0, < 12.1.5.2 |
Showing 50 of 84 affected configurations. See NVD for the full list.
References
- https://support.f5.com/csp/article/K72752002Vendor Advisory
- https://support.f5.com/csp/article/K72752002Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-5913?
In versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.2, the BIG-IP Client or Server SSL profile ignores revoked certificates, even when a valid CRL is present. This impacts SSL/TLS connections and may result in a man-in-the-middle attack on the connections.
How severe is CVE-2020-5913?
CVE-2020-5913 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5913?
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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