CVE-2020-5942

Name: CVE-2020-5942
Creator: NVD / NIST
Published: 2020-11-05T20:15:17.677+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.00%

Last modified Jun 17, 2026

CVE-2020-5942 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In BIG-IP PEM 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, when processing Capabilities-Exchange-Answer (CEA) packets with certain attributes from the Policy and Charging Rules Function (PCRF) server, the Traffic Management Microkernel (TMM) may generate a core file and restart.. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

In BIG-IP PEM 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, when processing Capabilities-Exchange-Answer (CEA) packets with certain attributes from the Policy and Charging Rules Function (PCRF) server, the Traffic Management Microkernel (TMM) may generate a core file and restart.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.00%

58.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
F5	Big-Ip Policy Enforcement Manager	>= 11.6.1, <= 11.6.5.2
F5	Big-Ip Policy Enforcement Manager	>= 12.1.0, <= 12.1.5.2
F5	Big-Ip Policy Enforcement Manager	>= 13.1.0, <= 13.1.3.4
F5	Big-Ip Policy Enforcement Manager	>= 14.1.0, < 14.1.2.8
F5	Big-Ip Policy Enforcement Manager	>= 15.1.0, < 15.1.1
F5	Big-Ip Policy Enforcement Manager	>= 16.0.0, < 16.0.1

References

https://support.f5.com/csp/article/K82530456Vendor Advisory
https://support.f5.com/csp/article/K82530456Vendor Advisory

Timeline

Published: Nov 5, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5942?

How severe is CVE-2020-5942?

CVE-2020-5942 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5942?

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.

Are you affected by CVE-2020-5942?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST