VulnerabilityAnalyzed

CVE-2026-59762

When an HTTP/2 profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.

HIGH 8.7EPSS 0.57%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.57%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

When an HTTP/2 profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization. Impact: System performance can degrade until the TMM process is either forced to restart or is manually restarted. This vulnerability allows a remote, unauthenticated attacker to cause a degradation of service that can lead to a denial-of-service (DoS) on the BIG-IP system. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS 4.0: 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.57% probability · 46th percentile
CISA KEV: Not listed
Weakness: CWE-770
Affected: f5/big-ip next cloud-native network functions · f5/big-ip next for kubernetes · f5/big-ip next service proxy for kubernetes
Source: f5sirt@f5.com

References

https://my.f5.com/manage/s/article/K000162231Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.