CVE-2026-59762: f5 big-ip
Vulnerability summary
CVE-2026-59762 is a high (CVSS 8.7) vulnerability in f5 big-ip. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 46.1% of scored vulnerabilities.
Timeline
- 15-07-2026PublishedVulnerability first disclosed.
- 15-07-2026Last modifiedVulnerability information updated.
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 metrics
4 scores · 2 sources · 2 versions- NVDNIST8.7HighCVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.57%
Chance of exploitation in the next 30 days
Percentile
46%
Versus all other CVEs
30-day change
0.00 pp
From 0.57% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F56 products
- big-ip≥ 21.1.0, < 21.1.0.1 | ≥ 21.0.0, < 21.0.0.3 | ≥ 17.5.0, < 17.5.1.8 | ≥ 17.1.0, < 17.1.3.4
- big-ip_next_cloud-native_network_functions≥ 1.1.0, < 1.4.3 | ≥ 2.0.0, < 2.2.3 | 2.3.0
- big-ip next cnf≥ 2.3.0, < 2.3.2 | ≥ 2.0.0, < 2.2.3 | ≥ 1.1.0, < 1.4.3
- big-ip_next_for_kubernetes≥ 2.3.0, < 2.3.2 | ≥ 2.0.0, < 2.2.3 | 2.3.0
- big-ip_next_service_proxy_for_kubernetes≥ 1.7.0, < 1.7.18 | ≥ 1.8.0, ≤ 1.9.2 | ≥ 2.0.0, ≤ 2.0.3
1 vendor · 6 products