CVE-2021-1237 HIGH

CVE-2021-1237: Cisco AnyConnect Secure Mobility Client for Windows DLL Injection Vulnerability

Vendor Cisco
Product Cisco AnyConnect Secure Mobility Client
Weakness CWE-427
Published January 13, 2021
Last update November 12, 2024

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the Network Access Manager and Web Security Agent components of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL injection attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path in the system which, in turn, causes a malicious DLL file to be loaded when the application starts. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges.

Key dates

02Disclosure timeline

January 13, 2021 CVE published
November 12, 2024 Record updated