CVE-2020-3433
Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability
- Published
- Aug 17, 2020
- Updated
- Aug 12, 2026
- Assigning CNA
- cisco
- Evidence observed
- Oct 24, 2022
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HModerate · next 30 days
- Percentile
- 95.5%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
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.
Sources
1PoCs and technical analysis for three Cisco AnyConnect Windows vulnerabilities: local privilege escalation (CVE-2020-3433), denial of service (CVE-2020-3434), and VPN profile modification (CVE-2020-3435).
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