CVE-2020-3433

HighActively exploited (CISA KEV)Known to be used in ransomware campaigns

Description

A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking 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 sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.

SeverityHigh
CVSS7.8
Exploit probability—
ProductCisco AnyConnect Secure
PublishedAug 17, 2020
First seenAug 17, 2020
Added to KEVOct 24, 2022
Weakness typeCWE-427CWE-427

How to fix

CISA required action

Apply updates per vendor instructions.

CISA due date: Nov 14, 2022
Update
  • cisco anyconnect_secure_mobility_client4.9.00086 or later

Affected products

ProductAffected versionsFixed in
cisco anyconnect_secure_mobility_clientv < 4.9.000864.9.00086

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