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ExploitedIn CISA KEVFix available

CVE-2020-3153

Exploitation confirmed. First attested on 2022-10-24 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2020-02-19
  • Fixed in4.8.02042
  • WeaknessCWE-427

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2020-02-1920:15CVE publishedNVD
  2. 2022-10-24Added to the CISA KEV catalogCISA KEV
  3. 2022-10-24Listed as exploited by GCVEGCVE
  4. 2022-10-24Exploitation first reportedCISA KEV
  5. 2024-11-0816:11SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-3153?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-3153?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Cisco anyconnect secure mobility client
BranchAffectedFixed in
4.8< 4.8.020424.8.02042

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As cisco, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Cisco AnyConnect Secure Mobility Client

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2020-09-30

Fix

  1. Update Cisco anyconnect secure mobility client to 4.8.02042
  2. CISA’s required action: Apply updates per vendor instructions.due 2022-11-14

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
3 repositories, unverifiedshubham0d/CVE-2020-3153raspberry-pie/CVE-2020-3153goichot/CVE-2020-3153
PoC-in-GitHub
Metasploit modules
1 moduleexploit/windows/local/anyconnect_lperank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-10-24
Patch Due Date
2022-11-14
Ransomware Use
Known
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Published
2020-02-19
Last Modified
2026-08-12
NVD status
Analyzed
GitHub Advisory
GHSA-xpxv-rfwh-rcfc

Frequently asked questions

What is CVE-2020-3153?

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.

Is CVE-2020-3153 actively exploited?

Yes. CVE-2020-3153 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-11-14.

What is the CVSS score for CVE-2020-3153?

CVE-2020-3153 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N.

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Sources for this record