BIG-IP SSL/TLS vulnerability
Priority MEDIUM 44CWE-401Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-401.
Summary
When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0046 40th percentileScored 2026-11-07
Fix Fixed BIG-IP (F5): 17.5.1.3, 17.1.3, 16.1.6.1 +1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| F5 | BIG-IP | 17.5.0 to before 17.5.1.3; 17.1.0 to before 17.1.3; 16.1.0 to before 16.1.6.1; 15.1.0 to before 15.1.10.8 | 17.5.1.3, 17.1.3, 16.1.6.1, 15.1.10.8 | Patch available | CNA |
| F5 | BIG-IP Next SPK | 2.0.0 and later; 1.9.0 and later; 1.8.0 and later; 1.7.0 and later | — | No fix listed | CNA |
| F5 | BIG-IP Next CNF | 2.0.0 and later; 1.1.0 and later | — | No fix listed | CNA |
| F5 | BIG-IP Next for Kubernetes | 2.0.0 and later | — | No fix listed | CNA |
- BIG-IP VendorF5 Affected 17.5.0 to before 17.5.1.3; 17.1.0 to before 17.1.3; 16.1.0 to before 16.1.6.1; 15.1.0 to before 15.1.10.8 Fixed in 17.5.1.3, 17.1.3, 16.1.6.1, 15.1.10.8 Patch available CNA
- BIG-IP Next SPK VendorF5 Affected 2.0.0 and later; 1.9.0 and later; 1.8.0 and later; 1.7.0 and later Fixed in — No fix listed CNA
- BIG-IP Next CNF VendorF5 Affected 2.0.0 and later; 1.1.0 and later Fixed in — No fix listed CNA
- BIG-IP Next for Kubernetes VendorF5 Affected 2.0.0 and later Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions:*:*:*:*:*:*:*:* | 1.1.0 – 1.4.1; 2.0.0 – 2.1.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_next_for_kubernetes:2.0.0:*:*:*:*:*:*:* | 2.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_next_for_kubernetes:2.1.0:*:*:*:*:*:*:* | 2.1.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_next_service_proxy_for_kubernetes:*:*:*:*:*:*:*:* | 1.7.0 – 1.9.2; 2.0.0 – 2.0.2 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions:*:*:*:*:*:*:*:* Versions 1.1.0 – 1.4.1; 2.0.0 – 2.1.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_next_for_kubernetes:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_next_for_kubernetes:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_next_service_proxy_for_kubernetes:*:*:*:*:*:*:*:* Versions 1.7.0 – 1.9.2; 2.0.0 – 2.0.2 Vulnerable ·F5
Remediation
- Fix · CNA BIG-IP (F5) Fixed in 17.5.1.3, 17.1.3, 16.1.6.1, 15.1.10.8
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
F5 BIG-IP 15.1.10.8, 16.1.6.1 and 2 more versions
13 records Highest priority Priority CRITICAL 1 CRITICAL, 7 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2025-33465 BigIP APM VulnerabilityPriority CRITICAL 99
- TI-2025-38317 TMM vulnerabilityPriority MEDIUM 44
- TI-2025-34592 BIG-IP Advanced WAF and ASM vulnerabilityPriority MEDIUM 44
Timeline
- 2026-10-02 Threatist record created from CVE-2025-61974
- 2026-10-03 Alias added: GHSA-j8fr-j6mp-3j67
References
More F5 Big-ip Next Cloud-native Network Functions vulnerabilities
- TI-2026-42605 BIG-IP HTTP/2 vulnerability CVSS 4.0HIGH 8.7
- TI-2026-29357 BIG-IP SSL/TLS vulnerability CVSS 4.0HIGH 8.7
- TI-2026-29350 BIG-IP SSL/TLS vulnerability CVSS 4.0HIGH 8.7
- TI-2025-38317 TMM vulnerability CVSS 4.0HIGH 8.7
- TI-2025-37392 BIG-IP SSL/TLS vulnerability CVSS 4.0HIGH 8.7
- TI-2025-37232 BIG-IP DNS cache vulnerability CVSS 4.0HIGH 8.7
Sources
- CVE-2025-61974 · CVE Program
- CVE-2025-61974 · NVD
- FIRST EPSS
- GHSA-j8fr-j6mp-3j67 · GitHub Advisory Database · CC BY 4.0
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