TI-2021-20039 Aliases CVE-2021-44425 GHSA-rgr5-hjh7-p6gp

An issue was discovered in AnyDesk before 6.2.6 and 6.3.x before 6.3.3.

LOW 30Published 2022-09-12 · Updated 2024-08-04

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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).

Why it matters now

EPSS 0.00594 48th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:anydesk:anydesk::::::windows::*	before 6.2.6; 6.3.0 to before 6.3.3	Vulnerable	AnyDesk

cpe:2.3:a:anydesk:anydesk:*:*:*:*:*:windows:*:* Versions before 6.2.6; 6.3.0 to before 6.3.3 Vulnerable ·AnyDesk

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-44425
2026-10-03 Alias added: GHSA-rgr5-hjh7-p6gp

References

Exploit 1

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

Advisory 1

https://anydesk.com/en/downloads/windows

TI-2020-10342 AnyDesk before 5.5.3 on Linux and FreeBSD has a format string vulnerability that can be… CVSS 3.1CRITICAL 9.8
TI-2025-20641 An issue was discovered in AnyDesk for Windows before 9.0.5, AnyDesk for macOS before… CVSS 3.1HIGH 7.5
TI-2025-20640 An issue was discovered in AnyDesk for Windows before 9.0.6 and AnyDesk for Android… CVSS 3.1HIGH 7.5
TI-2019-15315 AnyDesk 5.4.0 - Unquoted Service Path CVSS 4.0HIGH 8.5
TI-2016-09270 AnyDesk 2.5.0 Unquoted Service Path Elevation of Privilege CVSS 4.0HIGH 8.5
TI-2017-10504 AnyDesk before 3.6.1 on Windows has a DLL injection vulnerability. CVSS 3.0CRITICAL 9.8

See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences