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Vulnerability record · CVE-2021-44426 · published 12 September 2022

CVE-2021-44426: Anydesk unrestricted file upload vulnerability

Anydesk · Anydesk

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.

8.8 CVSS 3.1 High EPSS 1.2% · top 34.2% CWE-434 · Unrestricted file upload
8.8CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://anydesk.com/en/downloads/windows ProductVendor Advisory
https://argus-sec.com/discovering-tunneling-service-security-flaws-in-anydesk-remote-application/ ExploitThird Party Advisory
https://anydesk.com/en/downloads/windows ProductVendor Advisory
https://argus-sec.com/discovering-tunneling-service-security-flaws-in-anydesk-remote-application/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-27918Anydesk integer overflow vulnerabilityAn issue was discovered in AnyDesk for Windows before 9.0.5, AnyDesk for macOS before 9.0.1, AnyDesk for Linux before 7.0.0, AnyDesk for iOS before 7…EPSS 0.50%9.8CVE-2020-13160AnyDesk Linux and FreeBSD format string remote code executionAnyDesk before 5.5.3 on Linux and FreeBSD contains a format string vulnerability (CWE-134) that can be exploited for remote code execution. The flaw …EPSS 81%analysed9.8CVE-2017-14397Anydesk injection vulnerabilityAnyDesk before 3.6.1 on Windows has a DLL injection vulnerability.EPSS 1.5%8.5CVE-2016-20094Anydesk unquoted search path vulnerabilityAnyDesk 2.5.0 contains an unquoted service path vulnerability that allows local users to execute arbitrary code with SYSTEM privileges by exploiting …EPSS 0.20%8.5CVE-2019-25261Anydesk unquoted search path vulnerabilityAnyDesk 5.4.0 contains an unquoted service path vulnerability in its Windows service configuration that allows local attackers to potentially inject …EPSS 0.17%8.2CVE-2025-27919Anydesk improper access control vulnerabilityAn issue was discovered in AnyDesk through 9.0.4. A remotely connected user with the "Control my device" permission can manipulate remote AnyDesk set…EPSS 0.30%7.8CVE-2021-40854Anydesk improper privilege management vulnerabilityAnyDesk before 6.2.6 and 6.3.x before 6.3.3 allows a local user to obtain administrator privileges by using the Open Chat Log feature to launch a pri…EPSS 0.20%7.8CVE-2020-35483Anydesk uncontrolled search path element vulnerabilityAnyDesk before 6.1.0 on Windows, when run in portable mode on a system where the attacker has write access to the application directory, allows this …EPSS 0.47%

Source: NIST National Vulnerability Database (record CVE-2021-44426), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.