CVE-2020-3427
MEDIUMDescription
The Windows Logon installer prior to 4.1.2 did not properly validate file installation paths. This allows an attacker with local user privileges to coerce the installer to write to arbitrary privileged directories. If successful, an attacker can manipulate files used by Windows Logon, cause Denial of Service (DoS) by deleting file(s), or replace system files to potentially achieve elevation of privileges. Note that this can only exploitable during new installations while the installer is running and is not exploitable once installation is finished. Versions 4.1.2 of Windows Logon addresses this issue.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 23% of all known CVEs.
References
Related Vulnerabilities
Other CWE-280 (Improper Handling of Insufficient Permissions) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-24116 | Critical | 9.8 | 28% | - | - |
| CVE-2026-20817 | High | 7.8 | 5.3% | - | Fix |
| CVE-2020-8219 | High | 7.2 | 2.2% | - | - |
| CVE-2012-4550 | Medium | 5.3 | 2.1% | - | - |
| CVE-2020-26195 | Medium | 5.3 | 1.8% | - | - |
| CVE-2021-38312 | High | 7.1 | 1.3% | - | - |
Common questions
How do I fix CVE-2020-3427?
Upgrade duo authentication for windows logon and rdp to 4.1.2 or later.
Is CVE-2020-3427 being actively exploited?
Not that we know of. CVE-2020-3427 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.31% is the estimated probability that it will be exploited in the next 30 days. That is higher than 23% of all scored CVEs.
How severe is CVE-2020-3427?
CVE-2020-3427 has a CVSS v3 base score of 6.6, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2020-3427 affect?
Published advisories record a fix for duo authentication for windows logon and rdp (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.