CVE-2020-17087

HIGHNVD 7.89.0▲Trending — 5 sources updated this weekExploited in the wild

7.8

Windows Kernel Local Elevation of Privilege Vulnerability

CVSS v3: 7.8
EG Score: 9.0(high)
EPSS: 95.7%
KEV: ⚠ Exploited

Published

November 11, 2020

Last Modified

October 29, 2025

References (3)

secure@microsofthttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17087
af854a3a-2127-422b-91ae-364da2661108https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17087
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-17087

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2020-170872020-11-10
Windows Kernel Local Elevation of Privilege Vulnerability

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-03 15:43 UTCEG score recompute
2026-06-03 15:43 UTCVendor advisory
2026-06-03 15:43 UTCGHSA enrichment
2026-06-03 11:44 UTCEG score recompute
2026-06-03 11:44 UTCVendor advisory
2026-06-03 11:44 UTCGHSA enrichment
2026-06-03 07:46 UTCEG score recompute
2026-06-03 07:46 UTCVendor advisory
2026-06-03 07:46 UTCGHSA enrichment
2026-06-03 03:48 UTCEG score recompute
2026-06-03 03:48 UTCVendor advisory
2026-06-03 03:48 UTCGHSA enrichment
2026-06-02 23:50 UTCEG score recompute
2026-06-02 23:50 UTCVendor advisory
2026-06-02 23:50 UTCGHSA enrichment
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 19:52 UTCEG score recompute
2026-06-02 19:52 UTCVendor advisory
2026-06-02 19:52 UTCGHSA enrichment

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCvp777/Windows-Non-Paged-Pool-Overflow-Exploitation
First seen Jul 2, 2021
Techniques based on named pipes for pool overflow exploitation targeting the most recent (and oldest) Windows versions demonstrated on CVE-2020-17087 and an off-by-one overflow
Open source ↗
GitHub PoCrevengsh/CVE-2020-17087
First seen Nov 26, 2020
A CVE-2020-17087 PoC.
Open source ↗

Frequently asked(6)

What is CVE-2020-17087?

CVE-2020-17087 is a high vulnerability published on November 11, 2020. Windows Kernel Local Elevation of Privilege Vulnerability

When was CVE-2020-17087 disclosed?

CVE-2020-17087 was first published in the National Vulnerability Database on November 11, 2020, with the most recent update on October 29, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-17087 actively exploited?

Yes. CISA added CVE-2020-17087 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

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

CVE-2020-17087 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2020-17087?

CVE-2020-17087 affects Microsoft Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2020-17087?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-17087, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-17087

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CVE-2020-17087

Published

Last Modified

References (3)

Weakness Classification(3)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-17087?

Same vendor

Same CWE

CVE-2020-17087

📅 Published

🔄 Last Modified

🔗 References (3)

Weakness Classification(3)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-17087?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

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Last Modified

References (3)

Frequently asked(6)

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