TMM Vulnerability
Priority MEDIUM 44CWE-787Published · 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-787 and the CVSS impact.
Summary
When connection mirroring is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate in the standby BIG-IP systems in a traffic group. 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 0.00445 38th percentileScored 2026-11-07
Fix Fixed BIG-IP (F5): 17.5.0, 17.1.2.2, 16.1.0 +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 | 17.1.0 to before 17.1.2.2 | 17.5.0, 17.1.2.2, 16.1.0, 15.1.0 | Patch available | CNA |
- BIG-IP VendorF5 Affected 17.1.0 to before 17.1.2.2 Fixed in 17.5.0, 17.1.2.2, 16.1.0, 15.1.0 Patch available CNA
CPE configurations NVD · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_access_policy_manager:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_advanced_firewall_manager:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_analytics:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_application_acceleration_manager:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_application_security_manager:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_domain_name_system:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_fraud_protection_service:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_global_traffic_manager:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_link_controller:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_local_traffic_manager:17.1.2:*:*:*:*:*:*:* | 17.1.2 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_access_policy_manager:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_analytics:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_application_security_manager:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_domain_name_system:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_fraud_protection_service:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_global_traffic_manager:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_link_controller:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_local_traffic_manager:17.1.2:*:*:*:*:*:*:* Versions 17.1.2 Vulnerable ·F5
Remediation
- Fix · CNA BIG-IP (F5) Fixed in 17.5.0, 17.1.2.2, 16.1.0, 15.1.0
Timeline
- 2026-10-02 Threatist record created from CVE-2025-41431
- 2026-10-03 Alias added: GHSA-fgm2-7ff4-mv6h
References
More F5 Big-ip Access Policy Manager vulnerabilities
- TI-2023-25230 BIG-IP Configuration utility unauthenticated remote code execution vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2022-01269 Missing authentication in F5 BIG-IP KEVCVSS 3.1CRITICAL 9.8
- TI-2021-05850 Memory corruption in BIG-IP KEVCVSS 3.1CRITICAL 9.8
- TI-2021-05845 Server-side request forgery in BIG-IP; BIG-IQ KEVCVSS 3.1CRITICAL 9.8
- TI-2020-04820 Path traversal in BIG-IP KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-41431 · CVE Program
- CVE-2025-41431 · NVD
- FIRST EPSS
- GHSA-fgm2-7ff4-mv6h · GitHub Advisory Database · CC BY 4.0
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