TI-2020-02982 Aliases CVE-2020-3433 GHSA-v63m-wv25-vhmp

Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

CRITICAL 93Exploited in the wildCWE-427Published 2020-08-17 · Updated 2026-08-12

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-427.

Summary

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.

Why it matters now

Exploitation Active In CISA KEV since 2022-10-24CISA due date 2022-11-14Known ransomware use

EPSS 0.10049 95th percentileScored 2026-11-08

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Active
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco AnyConnect Secure Mobility Client	all versions	—	No fix listed	CNA

Cisco AnyConnect Secure Mobility Client VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:anyconnect_secure_mobility_client::::::windows::*	before 4.9.00086	Vulnerable	Cisco

cpe:2.3:a:cisco:anyconnect_secure_mobility_client:*:*:*:*:*:windows:*:* Versions before 4.9.00086 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2022-10-24 Added to CISA KEV
2026-10-02 Threatist record created from CVE-2020-3433
2026-10-03 Alias added: GHSA-v63m-wv25-vhmp

References

Exploit 1

http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html

Advisory 1

20200805 Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

TI-2020-02715 Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability KEVCVSS 3.1MEDIUM 6.5
TI-2011-01789 The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect… CVSS 2.0HIGH 7.6
TI-2011-01790 The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect… CVSS 2.0HIGH 9.3
TI-2012-02179 The VPN downloader implementation in the WebLaunch feature in Cisco AnyConnect Secure… CVSS 2.0HIGH 9.3
TI-2023-06884 Incorrect default permissions in Cisco Secure Client CVSS 3.1HIGH 7.8
TI-2012-02654 Cisco AnyConnect Secure Mobility Client 3.1.x before 3.1.00495, and 3.2.x, does not check… CVSS 2.0HIGH 9.3

See all 68 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences