CVE-2020-1421

Name: CVE-2020-1421
Creator: NVD / NIST
Published: 2020-07-14T23:15:18.087+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 75.81%

Last modified Jun 17, 2026

CVE-2020-1421 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A remote code execution vulnerability exists in Microsoft Windows that could allow remote code execution if a .LNK file is processed.An attacker who successfully exploited this vulnerability could gain the same user rights as the local user, aka 'LNK Remote Code Execution Vulnerability'.. EPSS estimates a 75.81% chance of exploitation in the next 30 days.

Description

A remote code execution vulnerability exists in Microsoft Windows that could allow remote code execution if a .LNK file is processed.An attacker who successfully exploited this vulnerability could gain the same user rights as the local user, aka 'LNK Remote Code Execution Vulnerability'.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

75.81%

99.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-843

Affected Software

Vendor	Product	Versions
Microsoft	Windows 10	All versions
Microsoft	Windows 10	1607
Microsoft	Windows 10	1709
Microsoft	Windows 10	1803
Microsoft	Windows 10	1809
Microsoft	Windows 10	1903
Microsoft	Windows 10	1909
Microsoft	Windows 10	2004
Microsoft	Windows Server 2016	All versions
Microsoft	Windows Server 2016	1903
Microsoft	Windows Server 2016	1909
Microsoft	Windows Server 2016	2004
Microsoft	Windows Server 2019	All versions

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1421Patch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-923/Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1421Patch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-923/Third Party Advisory, VDB Entry

Timeline

Published: Jul 14, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-1421?

How severe is CVE-2020-1421?

CVE-2020-1421 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 75.81% probability of exploitation in the next 30 days.

How do I fix CVE-2020-1421?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-1421?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST