What’s Vulnerable › Vulnerabilities

CVE-2021-44425

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-09-12 · updated 2026-06-17

Description

An issue was discovered in AnyDesk before 6.2.6 and 6.3.x before 6.3.3. An unnecessarily open listening port on a machine in the LAN of an attacker, opened by the Anydesk Windows client when using the tunneling feature, allows the attacker unauthorized access to the local machine's AnyDesk tunneling protocol stack (and also to any remote destination machine software that is listening to the AnyDesk tunneled port).

Affected products

• AnyDesk: before 6.2.6; from 6.3.0 before 6.3.3 — fixed in 6.2.6, 6.3.3

How to fix

Upgrade to a fixed version: AnyDesk 6.2.6, 6.3.3. Check the vendor advisory for mitigations.

References

• https://anydesk.com/en/downloads/windows
• https://argus-sec.com/discovering-tunneling-service-security-flaws-in-anydesk-remote-application/
• https://anydesk.com/en/downloads/windows
• https://argus-sec.com/discovering-tunneling-service-security-flaws-in-anydesk-remote-application/

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