CVE-2020-1421
CVE-2020-1421 is a high-severity vulnerability in Microsoft Windows 10 with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 76% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-843.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 9.3
- EPSS exploit prediction: 76% (99th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-843
- Affected product: Microsoft Windows 10
- Published:
- Last modified:
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'.
Frequently asked questions
- What is CVE-2020-1421?
- 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'.
- How severe is CVE-2020-1421?
- CVE-2020-1421 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-1421 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 76% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-1421?
- CVE-2020-1421 primarily affects Microsoft Windows 10. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-1421?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-1421 published?
- CVE-2020-1421 was published on 2020-07-14 and last updated on 2026-06-17.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1421
- https://www.zerodayinitiative.com/advisories/ZDI-20-923/
Affected products (27)
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:arm64:*
- cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x86:*
- cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
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