Microsoft Windows Kernel Privilege Escalation Vulnerability

HIGH 7.8EXPLOITED (CISA KEV)CVE-2020-17087 · Published 11/11/2020 · updated 17/06/2026

Microsoft Windows Kernel Privilege Escalation Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 03/11/2021. Patch affected systems as an emergency.

In short

CVE-2020-17087 is a HIGH (CVSS 7.8) vulnerability.
Exploited in the wild: CISA added it to the KEV catalog on 03/11/2021.
Chance of exploitation in the next 30 days (EPSS): 5.4%, higher than 92.7% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
Windows Microsoft	Versions not published yet (product named by CISA KEV)

Description

Windows Kernel Local Elevation of Privilege Vulnerability

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17087 · Patch
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2020-17087

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