Known exploited vulnerability
CVE-2020-17087
The short answer
CVE-2020-17087 affects Microsoft Windows 10 Version 1803 and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first. The vendor has linked a patch.
What it is
Windows Kernel Local Elevation of Privilege Vulnerability
Weakness: CWE-131.
Severity
7.8 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date May 3, 2022
EPSS, next 30 days
5.4%
Higher than 93% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
Windows 10 Version 1803, Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows Server, version 1909 (Server Core installation), Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows Server, version 1903 (Server Core installation), Windows 10 Version 2004, Windows Server version 2004. NVD's record lists the exact affected versions.
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17087 PatchVendor Advisory
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17087 PatchVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-17087 US Government Resource
Questions
Is CVE-2020-17087 being exploited?
Yes. CISA added CVE-2020-17087 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03.
How do I fix CVE-2020-17087?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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