F5-K000159890: Medium severity F5 BIG-IP Next for Kubernetes vulnerability
Published Feb 5, 2026
·Updated
The ParseAddress function constructs domain-literal address components through repeated string concatenation. When parsing large domain-literal components, this can cause excessive CPU consumption.
Affected Software
1 affected componentFixes available
F5 BIG-IP Next for Kubernetes=2.1.0
2.2.0
Event History
Feb 5, 2026
Advisory Published
via F5·05:15 PM
Data Sourced
via F5·05:15 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of F5-K000159890?
The severity of F5-K000159890 is considered high due to the excessive CPU consumption it can cause.
2
How do I fix F5-K000159890?
To fix F5-K000159890, upgrade to a patched version of the affected software that addresses this vulnerability.
3
What software is affected by F5-K000159890?
F5-K000159890 affects F5 BIG-IP Next for Kubernetes versions 2.1.0 and 2.2.0.
4
What are the potential impacts of F5-K000159890?
The potential impacts of F5-K000159890 include degraded system performance and increased server load.
5
Is there a workaround for F5-K000159890?
Currently, there are no documented workarounds for F5-K000159890; applying a patch is required.