CVE-2026-49163
Microsoft · Application Insights Profiler
Application Insights Profiler contains a path traversal vulnerability that allows an authenticated attacker to elevate privileges over a network.
Executive summary
A path traversal vulnerability in Microsoft Application Insights Profiler enables an authenticated attacker to perform unauthorized privilege escalation.
Vulnerability
This vulnerability is a path traversal flaw (CWE-22) residing in the Application Insights Profiler. It requires an attacker to possess low privileges to execute the attack, as indicated by the CVSS vector PR:L, making this an authenticated privilege escalation issue.
Business impact
The ability for an authenticated user to elevate privileges poses a significant risk to organizational security, potentially allowing an attacker to gain administrative control over the affected system. With a CVSS score of 8.8, this vulnerability is considered high severity, as it facilitates full compromise of confidentiality, integrity, and availability. Unauthorized access at an elevated level can lead to data exfiltration, service disruption, and broader lateral movement within the network.
Remediation
Immediate Action: Consult the Microsoft Security Response Center (MSRC) update guide for the latest security patches and apply them to all affected instances immediately.
Proactive Monitoring: Review system access logs for unusual file path requests or attempts to access restricted directories that deviate from standard operational patterns.
Compensating Controls: Implement strict access control lists to limit the scope of user permissions and ensure that service accounts operate under the principle of least privilege.
Exploitation status
Public Exploit Available: No (exploit_available: false)
Analyst recommendation
Given the high CVSS score, organizations should prioritize the identification of all Application Insights Profiler deployments. It is imperative to monitor official Microsoft channels for patch availability and apply updates as soon as they are released to prevent potential privilege escalation attacks.