CVE-2019-6673

Name: CVE-2019-6673
Creator: NVD / NIST
Published: 2019-11-27T22:15:11.93+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.01%

Last modified Jun 17, 2026

CVE-2019-6673 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On versions 15.0.0-15.0.1 and 14.0.0-14.1.2, when the BIG-IP is configured in HTTP/2 Full Proxy mode, specifically crafted requests may cause a disruption of service provided by the Traffic Management Microkernel (TMM).. EPSS estimates a 1.01% chance of exploitation in the next 30 days.

Description

On versions 15.0.0-15.0.1 and 14.0.0-14.1.2, when the BIG-IP is configured in HTTP/2 Full Proxy mode, specifically crafted requests may cause a disruption of service provided by the Traffic Management Microkernel (TMM).

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

1.01%

58.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
F5	Big-Ip Access Policy Manager	>= 14.0.0, <= 14.1.2
F5	Big-Ip Access Policy Manager	>= 15.0.0, <= 15.0.1
F5	Big-Ip Advanced Firewall Manager	>= 14.0.0, <= 14.1.2
F5	Big-Ip Advanced Firewall Manager	>= 15.0.0, <= 15.0.1
F5	Big-Ip Application Acceleration Manager	>= 14.0.0, <= 14.1.2
F5	Big-Ip Application Acceleration Manager	>= 15.0.0, <= 15.0.1
F5	Big-Ip Application Security Manager	>= 14.0.0, <= 14.1.2
F5	Big-Ip Application Security Manager	>= 15.0.0, <= 15.0.1
F5	Big-Ip Fraud Protection Service	>= 14.0.0, <= 14.1.2
F5	Big-Ip Fraud Protection Service	>= 15.0.0, <= 15.0.1
F5	Big-Ip Link Controller	>= 14.0.0, <= 14.1.2
F5	Big-Ip Link Controller	>= 15.0.0, <= 15.0.1
F5	Big-Ip Local Traffic Manager	>= 14.0.0, <= 14.1.2
F5	Big-Ip Local Traffic Manager	>= 15.0.0, <= 15.0.1
F5	Big-Ip Policy Enforcement Manager	>= 14.0.0, <= 14.1.2
F5	Big-Ip Policy Enforcement Manager	>= 15.0.0, <= 15.0.1

References

https://support.f5.com/csp/article/K81557381Vendor Advisory
https://support.f5.com/csp/article/K81557381Vendor Advisory

Timeline

Published: Nov 27, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-6673?

How severe is CVE-2019-6673?

CVE-2019-6673 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.

How do I fix CVE-2019-6673?

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-2019-6673?

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

Scan your code now

Source: NVD / NIST