In F5 BIG-IP AAM and PEM software version 12.0.0 to 12.1.1, 11.6.0 to 11.6.1, 11.4.1 to 11.5.4, a remote attacker may create maliciously crafted HTTP request to cause Traffic Management Microkernel (TMM) to restart and temporarily fail to process traffic. This issue is exposed on virtual servers using a Policy Enforcement profile or a Web Acceleration profile. Systems that do not have BIG-IP AAM module provisioned are not vulnerable. The Traffic Management Microkernel (TMM) may restart and temporarily fail to process traffic. Systems that do not have BIG-IP AAM or PEM module provisioned are not vulnerable.
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 2 products from f5, from f5 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.
2017-10-27T14:29:00.357
2025-04-20T01:37:25.860
Deferred
CVSSv3.0: 5.9 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
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.