CVE-2021-44426
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.16% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- anydesk/anydesk
- Source
- cve@mitre.org
References
- https://anydesk.com/en/downloads/windowsProduct, Vendor Advisory
- https://argus-sec.com/discovering-tunneling-service-security-flaws-in-anydesk-remote-application/Exploit, Third Party Advisory
- https://anydesk.com/en/downloads/windowsProduct, Vendor Advisory
- https://argus-sec.com/discovering-tunneling-service-security-flaws-in-anydesk-remote-application/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.