CVE-2021-1237

HIGH

Cisco AnyConnect Secure Mobility Client for Windows - DLL Injection

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1

Scores

CVSS v3 7.8
EPSS 0.0005
EPSS Percentile 17.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-427
Status published
Products (1)
cisco/anyconnect_secure_mobility_client < 4.9.04043
Published Jan 13, 2021
Tracked Since Feb 18, 2026