6.2
CVSSv2

CVE-2021-1567

Published: 16/06/2021 Updated: 07/11/2023
CVSS v2 Base Score: 6.2 | Impact Score: 10 | Exploitability Score: 1.9
CVSS v3 Base Score: 6.7 | Impact Score: 5.9 | Exploitability Score: 0.8
VMScore: 552
Vector: AV:L/AC:H/Au:N/C:C/I:C/A:C

Vulnerability Summary

A vulnerability in the DLL loading mechanism of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local malicious user to perform a DLL hijacking attack on an affected device if the VPN Posture (HostScan) Module is installed on the AnyConnect client. This vulnerability is due to a race condition in the signature verification process for DLL files that are loaded on an affected device. An attacker could exploit this vulnerability by sending a series of crafted interprocess communication (IPC) messages to the AnyConnect process. A successful exploit could allow the malicious user to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system.

Vulnerability Trend

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cisco anyconnect secure mobility client

Vendor Advisories

A vulnerability in the DLL loading mechanism of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device if the VPN Posture (HostScan) Module is installed on the AnyConnect client This vulnerability is due to a race condition in the signature verificati ...