What’s Vulnerable › Vulnerabilities

CVE-2021-34745: AppDynamics .NET Agent Privilege Escalation Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-18 · updated 2026-06-17
• Weakness: CWE-269

Description

A vulnerability in the AppDynamics .NET Agent for Windows could allow an attacker to leverage an authenticated, local user account to gain SYSTEM privileges. This vulnerability is due to the .NET Agent Coordinator Service executing code with SYSTEM privileges. An attacker with local access to a device that is running the vulnerable agent could create a custom process that would be launched with those SYSTEM privileges. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system. This vulnerability is fixed in AppDynamics .NET Agent Release 21.7.

Affected products

• Cisco AppDynamics .NET Agent for Windows: before 21.7 — fixed in 21.7

How to fix

Upgrade to a fixed version: Cisco AppDynamics .NET Agent for Windows 21.7. Check the vendor advisory for mitigations.

References

• https://docs.appdynamics.com/display/PAA/Security+Advisory%3A+AppDynamics+.NET+Agent+Privilege+Escalation+Vulnerability
• https://docs.appdynamics.com/display/PAA/Security+Advisory%3A+AppDynamics+.NET+Agent+Privilege+Escalation+Vulnerability

Get alerted when CVE-2021-34745 or the next vulnerability affects your stack