Azure Monitor Agent Remote Code Execution Vulnerability

The impact of CVE-2025-47988 is severe due to its RCE nature. An attacker who can access the network where the Azure Monitor Agent is deployed can exploit this vulnerability to execute malicious code on the affected system. This could lead to complete system compromise, data exfiltration, and potentially lateral movement within the Azure environment. The adjacent network requirement limits the immediate scope, but it still represents a significant risk, particularly in environments with relaxed network segmentation. Successful exploitation could allow an attacker to install persistent backdoors, steal sensitive data stored by the agent, or disrupt monitoring operations.

Organizations heavily reliant on Azure Monitor Agent for log collection and performance monitoring are particularly at risk. Environments with less stringent network segmentation or those that allow external access to the Azure network are also more vulnerable. Shared hosting environments utilizing Azure Monitor Agent should be assessed for potential cross-tenant impact.

• azure: Monitor Azure activity logs for processes spawned by the Azure Monitor Agent that are not part of its normal operation.

Get-AzActivityLog -ResourceGroupName 'your_resource_group' -Search 'AzureMonitorAgent' -StartTime (Get-Date).AddDays(-7) | Where-Object {$_.OperationName -like '*Process*'} | Select-Object TimeCreated, OperationName, ResourceId

• azure: Check for unusual network connections originating from the Azure Monitor Agent.

Get-NetTCPConnection -LocalPort 443 | Where-Object {$_.State -eq 'Established'} | Select-Object LocalAddress, LocalPort, RemoteAddress, RemotePort

• generic web: Monitor access logs for requests targeting the Azure Monitor Agent endpoint with unusual parameters or payloads. Look for patterns indicative of code injection attempts.

1. 2025-07-08Disclosure

   disclosure

1. 予約済み2025-05-14
2. 公開日2025-07-08
3. 更新日2026-02-26
4. EPSS 更新日2026-03-23

The primary mitigation for CVE-2025-47988 is to upgrade the Azure Monitor Agent to version 1.35.1 or later. If an immediate upgrade is not feasible due to compatibility concerns or testing requirements, consider implementing network segmentation to restrict access to the agent from untrusted networks. Review and strengthen network security policies to limit lateral movement. While a WAF or proxy cannot directly prevent this code injection, they can help detect and block suspicious network traffic associated with exploitation attempts. Monitor Azure activity logs for unusual processes or network connections originating from the agent.