CVE-2020-5852
Last modified
CVE-2020-5852 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Undisclosed traffic patterns received may cause a disruption of service to the Traffic Management Microkernel (TMM). This vulnerability affects TMM through a virtual server configured with a FastL4 profile. EPSS estimates a 1.20% chance of exploitation in the next 30 days.
Description
Undisclosed traffic patterns received may cause a disruption of service to the Traffic Management Microkernel (TMM). This vulnerability affects TMM through a virtual server configured with a FastL4 profile. Traffic processing is disrupted while TMM restarts. This issue only impacts specific engineering hotfixes. NOTE: This vulnerability does not affect any of the BIG-IP major, minor or maintenance releases you obtained from downloads.f5.com. The affected Engineering Hotfix builds are as follows: Hotfix-BIGIP-14.1.2.1.0.83.4-ENG Hotfix-BIGIP-12.1.4.1.0.97.6-ENG Hotfix-BIGIP-11.5.4.2.74.291-HF2
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Local Traffic Manager | 11.5.4.2.74.291 |
| F5 | Big-Ip Local Traffic Manager | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Local Traffic Manager | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Advanced Firewall Manager | 11.5.4.2.74.291 |
| F5 | Big-Ip Advanced Firewall Manager | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Advanced Firewall Manager | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Application Acceleration Manager | 11.5.4.2.74.291 |
| F5 | Big-Ip Application Acceleration Manager | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Application Acceleration Manager | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Analytics | 11.5.4.2.74.291 |
| F5 | Big-Ip Analytics | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Analytics | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Access Policy Manager | 11.5.4.2.74.291 |
| F5 | Big-Ip Access Policy Manager | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Access Policy Manager | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Application Security Manager | 11.5.4.2.74.291 |
| F5 | Big-Ip Application Security Manager | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Application Security Manager | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Edge Gateway | 11.5.4.2.74.291 |
| F5 | Big-Ip Edge Gateway | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Edge Gateway | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Fraud Protection Service | 11.5.4.2.74.291 |
| F5 | Big-Ip Fraud Protection Service | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Fraud Protection Service | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Global Traffic Manager | 11.5.4.2.74.291 |
| F5 | Big-Ip Global Traffic Manager | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Global Traffic Manager | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Link Controller | 11.5.4.2.74.291 |
| F5 | Big-Ip Link Controller | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Link Controller | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Policy Enforcement Manager | 11.5.4.2.74.291 |
| F5 | Big-Ip Policy Enforcement Manager | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Policy Enforcement Manager | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Webaccelerator | 11.5.4.2.74.291 |
| F5 | Big-Ip Webaccelerator | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Webaccelerator | 14.1.2.1.0.83.4 |
| F5 | Big-Ip Domain Name System | 11.5.4.2.74.291 |
| F5 | Big-Ip Domain Name System | 12.1.4.1.0.97.6 |
| F5 | Big-Ip Domain Name System | 14.1.2.1.0.83.4 |
References
- https://support.f5.com/csp/article/K53590702Vendor Advisory
- https://support.f5.com/csp/article/K53590702Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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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.
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