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CVE-2020-3153

6.5, medium Known exploited Used in ransomware

Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
6.5, medium medium CVSS v3.1
EPSS, next 30 days
28% higher than 98.1% of scored CVEs
Exploitation
Confirmed in the wild
Published
19 Feb 20206 years ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 24 Oct 2022 and links it to ransomware activity. US federal agencies had to remediate by 14 Nov 2022, a deadline that has passed.

Required action. Apply updates per vendor instructions.

Description

A vulnerability in the installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges. The vulnerability is due to the incorrect handling of directory paths. An attacker could exploit this vulnerability by creating a malicious file and copying the file to a system directory. An exploit could allow the attacker to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks. To exploit this vulnerability, the attacker needs valid credentials on the Windows system.

Details

Vendor
Cisco
Product
Cisco AnyConnect Secure Mobility Client
Weakness
CWE-427 (opens in a new tab)
Status
Analyzed
Updated
12 Aug 2026
Assigner
psirt@cisco.com

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

References 6

Exploit code 4

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

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Every Cisco CVE we hold

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Beyond this page

Is CVE-2020-3153 in your network?

This page tells you how dangerous CVE-2020-3153 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2020-3153 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.