Vulnerability details
CVE-2025-55669
F5 BIG-IP
BIG-IP HTTP/2 vulnerability
CVSS 4.0
8.7High
Official description
When the BIG-IP Advanced WAF and ASM security policy and a server-side HTTP/2 profile are configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (f5) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L |
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (f5) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| F5 | BIG-IP | 16.1.0 ≤ v < 16.1.6 | CVEProject cvelistV5 (CNA) |
| F5 | BIG-IP | 17.1.0 ≤ v < 17.1.2.2 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://my.f5.com/manage/s/article/K000150752 vendor-advisory
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Details
- Published
- 2025-10-15
- Last updated
- 2026-02-26
- State
- Published
- Assigner (CNA)
- f5
Exploit prediction (EPSS)
0.38%
Probability of exploitation in 30 days
32.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-672Operation on a Resource after Expiration or Release