Is CVE-2020-17087 in the CISA KEV catalog?

Yes. CVE-2020-17087 is on the CISA Known Exploited Vulnerabilities list, added 2021-11-03.

What is the CVSS severity of CVE-2020-17087?

CVE-2020-17087 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2020-17087?

CVE-2020-17087 has an EPSS score of 5.39% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2020-17087?

No published fix for CVE-2020-17087 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-05-03. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2020-17087

HIGHCISA KEVEPSS 92th pctl

7.8

CVSS v3

NVD

Description

Windows Kernel Local Elevation of Privilege Vulnerability

CWE-131

How to fix

Actively exploited, no published fix found yet

CISA required action: Apply updates per vendor instructions.

Federal remediation due: 2022-05-03

Mitigation guidance may be in the linked vendor advisories in the References section below.

TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

5.39%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Windows Kernel Privilege Escalation Vulnerability

Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.

Apply updates per vendor instructions.

Remediation due: 2022-05-03

References

Patch1

portal.msrc.microsoft.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-131 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-36824	High	7.4	77%	-	Fix
CVE-2020-8450	High	7.3	72%	-	Fix
CVE-2020-6113	High	7.8	69%	-	-
CVE-2026-42945	Critical	8.1	61%	-	Fix
CVE-2020-6116	High	7.8	28%	-	-
CVE-2005-3120	Critical	9.8	23%	-	Fix

Embed a live status badge for CVE-2020-17087

Markdown

[![CVE-2020-17087](https://tridentstack.com/cve/badge/CVE-2020-17087.svg)](https://tridentstack.com/cve/CVE-2020-17087)

HTML

<a href="https://tridentstack.com/cve/CVE-2020-17087"><img src="https://tridentstack.com/cve/badge/CVE-2020-17087.svg" alt="CVE-2020-17087"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

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 2025-10-29.