How severe is CVE-2021-34745?

CVE-2021-34745 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-34745 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34745?

CVE-2021-34745 affects Cisco Appdynamics .net Agent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34745?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-34745 published?

CVE-2021-34745 was published on 2021-08-18 and last updated on 2026-06-17.

CVE-2021-34745

CVE-2021-34745 is a high-severity vulnerability in Cisco Appdynamics .net Agent with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Cisco Appdynamics .net Agent
Published: 2021-08-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-34745?: 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.
How severe is CVE-2021-34745?: CVE-2021-34745 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-34745 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34745?: CVE-2021-34745 affects Cisco Appdynamics .net Agent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34745?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-34745 published?: CVE-2021-34745 was published on 2021-08-18 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:cisco:appdynamics_.net_agent:*:*:*:*:*:windows:*:*

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