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CVE-2020-3433

75
FAUCET Score

CVE-2020-3433 is a critical DLL hijacking vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows. This flaw allows an authenticated local attacker to execute arbitrary code with SYSTEM privileges due to insufficient validation of loaded resources. With a CVSS score of 7.8 (High) and a FAUCET Risk Score of 99/100, the vulnerability presents a significant risk. It has a low attack complexity and requires local user credentials for exploitation. Notably, this CVE is actively exploited in the wild, including in known ransomware campaigns, and has publicly available Metasploit modules. The vulnerability has garnered substantial community and media attention, with multiple articles and discussions highlighting its severity and active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.9.00086CPE matchmatch criteria
cpe:2.3:a:cisco:anyconnect_secure_mobility_client:*:*:*:*:*:windows:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
10.05%
Probability of exploitation in next 30 days
EPSS Percentile
95.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · Oct 24, 2022
Metasploit: Cisco AnyConnect Privilege Escalations (CVE-2020-3153 and CVE-2020-3433) · Aug 5, 2020
This CVE's current EPSS score of 0.1005 is in the 99th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/159420/Cisco-AnyConnect-Privilege-Escalation.html
ExploitThird Party AdvisoryVDB Entry
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-F26WwJW
Vendor Advisory