What’s Vulnerable › Vulnerabilities
CVE-2020-27716
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-12-24 · updated 2026-06-17
Description
On versions 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.5, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, when a BIG-IP APM virtual server processes traffic of an undisclosed nature, the Traffic Management Microkernel (TMM) stops responding and restarts.
Affected products
- F5 BIG-IP APM: from 11.6.1 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 through 13.1.3; from 14.1.0 before 14.1.3.1; from 15.0.0 before 15.1.1 — fixed in 14.1.3.1, 15.1.1
How to fix
Upgrade to a fixed version: F5 BIG-IP APM 14.1.3.1, 15.1.1. Check the vendor advisory for mitigations.
References
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