ACTIVELY EXPLOITED
CVE-2020-3433: Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability
| Vendor | Cisco |
|---|---|
| Product | AnyConnect Secure |
| Actively exploited | Yes |
| Added to CISA KEV | 24 Oct 2022 |
| CISA federal deadline | 14 Nov 2022 |
| Ransomware use | Known |
| Weakness (CWE) | CWE-427 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
Cisco AnyConnect Secure Mobility Client for Windows interprocess communication (IPC) channel allows for insufficient validation of resources that are loaded by the application at run time. An attacker with valid credentials on Windows could execute code on the affected machine with SYSTEM privileges.
SOURCES
Other Cisco flaws
- CVE-2026-20320: Cisco BroadWorks Improper Restriction of XML External Entity Reference Vulnerability
- CVE-2026-76418: Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability
- CVE-2026-76519: Cisco Secure Email Gateway Relative Path Traversal Vulnerability
- CVE-2026-76504: Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability
- CVE-2026-76460: Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.