In BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, PEM, and WebSafe software 12.0.0 to 12.1.1, in some cases the Traffic Management Microkernel (TMM) may crash when processing fragmented packets. This vulnerability affects TMM through a virtual server configured with a FastL4 profile. Traffic processing is disrupted while TMM restarts. If the affected BIG-IP system is configured as part of a device group, it will trigger a failover to the peer device.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.9, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 11 products from f5, from f5, from f5 and 8 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2017-11-22T16:29:00.337
2025-04-20T01:37:25.860
Deferred
CVSSv3.1: 5.9 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | f5 | big-ip_afm | ≤ 12.1.1 | Yes |
| Application | f5 | big-ip_analytics | ≤ 12.1.1 | Yes |
| Application | f5 | big-ip_apm | ≤ 12.1.1 | Yes |
| Application | f5 | big-ip_application_acceleration_manager | ≤ 12.1.1 | Yes |
| Application | f5 | big-ip_asm | ≤ 12.1.1 | Yes |
| Application | f5 | big-ip_dns | ≤ 12.1.1 | Yes |
| Application | f5 | big-ip_link_controller | ≤ 12.1.1 | Yes |
| Application | f5 | big-ip_ltm | ≤ 12.1.1 | Yes |
| Application | f5 | big-ip_pem | ≤ 12.1.1 | Yes |
| Application | f5 | f5_websafe | ≤ 12.1.1 | Yes |
| Application | f5 | linerate | ≤ 2.6.2 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For f5's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.