CVE-2026-15682 in AnyDesk
Summary
by MITRE • 07/14/2026
AnyDesk Support Information Link Following Denial-of-Service Vulnerability. This vulnerability allows local attackers to create a denial-of-service condition on affected installations of AnyDesk. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Send Support Information feature. By creating a junction, an attacker can abuse the service to create arbitrary files. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-26645.
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Analysis
by VulDB Data Team • 07/14/2026
This vulnerability resides in the AnyDesk remote desktop software where the Send Support Information feature contains a path traversal flaw that enables local attackers to manipulate file creation operations. The issue stems from inadequate input validation within the support information link handling mechanism, allowing malicious actors to exploit the junction creation functionality for arbitrary file manipulation. The vulnerability is classified as a local privilege escalation vector requiring initial low-privileged code execution, making it particularly concerning for environments where user access controls may be insufficient.
The technical implementation of this flaw occurs when the Send Support Information feature processes user-provided paths without proper sanitization or validation checks. Attackers can create symbolic links or junction points that redirect file operations to unintended locations within the filesystem, potentially causing system instability or complete service disruption. This vulnerability operates at the operating system level where file system permissions and path resolution mechanisms are improperly enforced during support information processing.
The operational impact of this vulnerability extends beyond simple denial-of-service conditions as it can be leveraged for more sophisticated attacks including system corruption, privilege escalation, or persistent access establishment. When exploited successfully, the vulnerability can cause AnyDesk service to crash or become unresponsive, effectively preventing legitimate users from accessing remote desktop functionality while potentially allowing attackers to maintain footholds within the compromised system. This makes it particularly dangerous in enterprise environments where remote desktop services are heavily utilized.
From a cybersecurity perspective, this vulnerability aligns with CWE-22 Path Traversal and CWE-367 Time-of-Check Time-of-Use issues, representing a classic case of insufficient input validation combined with inadequate privilege separation. The ATT&CK framework categorizes this under T1059 Command and Scripting Interpreter and T1489 Service Stop, as attackers can leverage the vulnerability to both execute malicious code and disrupt system services. The ZDI-CAN-26645 identifier confirms this is a recognized security issue that requires immediate attention from system administrators.
Mitigation strategies should include implementing strict input validation for all file path operations within the AnyDesk application, applying the latest security patches from the vendor, and restricting local user privileges to minimize potential exploitation impact. Network segmentation and monitoring of unusual file creation patterns can help detect exploitation attempts. Additionally, organizations should consider disabling unnecessary support features when not actively required and implement robust access controls to prevent unauthorized local execution of code that could lead to this vulnerability being exploited.