This vulnerability (CVE-2026-11815) affects Broadcom Layer 7 API Gateway version 11.2.1 and involves CWE-502: Deserialization of untrusted data. An attacker capable of intercepting and modifying traffic between the client and the API Gateway server could exploit this flaw to deserialize arbitrary objects. Such exploitation could compromise security guarantees or enable remote code execution on the server. The CVSS 4.0 vector indicates network attack vector with high attack complexity and limited privileges required, but no user interaction. The vendor has not published a remediation or patch at this time.

Successful exploitation could allow an attacker to bypass security controls or execute arbitrary code remotely on the affected API Gateway server. This undermines the integrity and confidentiality of the system. However, the attack complexity is high and privileges required are low, which somewhat limits the ease of exploitation. No known exploits are reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, organizations should consider minimizing exposure of the affected API Gateway instance to untrusted networks and monitor for unusual traffic patterns. Avoid relying on this component for processing untrusted serialized data.