Executive brief
A security vulnerability exists in the Microsoft Azure Monitor Agent, a tool used to collect and analyze performance data from cloud and on-premises resources. An attacker located on the same local network could exploit this flaw to gain unauthorized higher-level permissions within the system. This could lead to a full compromise of the affected monitoring agent, potentially allowing the attacker to view sensitive data or disrupt monitoring operations.
Technical details
A privilege escalation vulnerability exists in the Microsoft Azure Monitor Agent Metrics Extension due to improper certificate validation (CWE-295). The flaw allows an unauthenticated attacker on an adjacent network to bypass security checks during the certificate handshake process. By exploiting this weakness, an attacker can elevate their privileges to a higher level, potentially gaining full control over the agent's functions. The vulnerability affects versions 1.0.0 through 1.65, and users are advised to update to the latest version provided by Microsoft.
Affected products
- Microsoft Azure Monitor Agent Metrics Extension 1.0.0 to 1.65
Timeline
- 2026-07-14: advisory: NVD and Microsoft published the vulnerability details.