What’s Vulnerable › Vulnerabilities

CVE-2021-44426

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-09-12 · updated 2026-06-17
• Weakness: CWE-434

Description

An issue was discovered in AnyDesk before 6.2.6 and 6.3.x before 6.3.5. An upload of an arbitrary file to a victim's local ~/Downloads/ directory is possible if the victim is using the AnyDesk Windows client to connect to a remote machine, if an attacker is also connected remotely with AnyDesk to the same remote machine. The upload is done without any approval or action taken by the victim.

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/

Get alerted when CVE-2021-44426 or the next vulnerability affects your stack