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TI-2021-20040 Aliases CVE-2021-44426GHSA-2r63-v4pm-8j7g

An issue was discovered in AnyDesk before 6.2.6 and 6.3.x before 6.3.5.

Priority MEDIUM 40CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

EPSS 0.01182 67th 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:anydesk:anydesk:*:*:*:*:*:windows:*:*before 6.2.6; 6.3.0 to before 6.3.3VulnerableAnyDesk
  • 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

  1. 2026-10-02 Threatist record created from CVE-2021-44426
  2. 2026-10-03 Alias added: GHSA-2r63-v4pm-8j7g

References

Exploit 1

Advisory 1

  • 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