CVE-2020-5879

Name: CVE-2020-5879
Creator: NVD / NIST
Published: 2020-04-30T21:15:16.87+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.79%

Last modified Jun 17, 2026

CVE-2020-5879 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On BIG-IP ASM 11.6.1-11.6.5.1, under certain configurations, the BIG-IP system sends data plane traffic to back-end servers unencrypted, even when a Server SSL profile is applied.. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

On BIG-IP ASM 11.6.1-11.6.5.1, under certain configurations, the BIG-IP system sends data plane traffic to back-end servers unencrypted, even when a Server SSL profile is applied.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.79%

51.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-319

Affected Software

Vendor	Product	Versions
F5	Big-Ip Application Security Manager	>= 11.6.1, <= 11.6.5.1

References

https://support.f5.com/csp/article/K88474783Vendor Advisory
https://support.f5.com/csp/article/K88474783Vendor Advisory

Timeline

Published: Apr 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5879?

On BIG-IP ASM 11.6.1-11.6.5.1, under certain configurations, the BIG-IP system sends data plane traffic to back-end servers unencrypted, even when a Server SSL profile is applied.

How severe is CVE-2020-5879?

CVE-2020-5879 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5879?

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-2020-5879?

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

Scan your code now

Source: NVD / NIST