CVE-2026-59762 json
BIG-IP HTTP/2 vulnerability
published 2026-07-15 3 mo ago modified 2026-08-06 3 mo ago also EUVD-2026-44679
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 47%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- F5 BIG-IP 17.1.3.4, 17.5.1.8, 21.0.0.3, 21.1.0.1
- F5 BIG-IP Next for Kubernetes 2.2.3, 2.3.2
- F5 BIG-IP Next SPK 1.7.18
- F5 BIG-IP Next CNF 1.4.3, 2.2.3, 2.3.2
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 8.7 | CVSS: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 |
Affected products
- F5 BIG-IP
- F5 BIG-IP Next for Kubernetes
- F5 BIG-IP Next SPK
- F5 BIG-IP Next CNF
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
References
-
my.f5.com
/manage/s/article/K000162231
vendor-advisory, patch
Sources
- CVE List CVE-2026-59762
- NVD CVE-2026-59762
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