CVE-2020-17087
HighExploitedPublic exploitWindows Kernel Local Elevation of Privilege Vulnerability
Published Nov 11, 2020 · Updated Oct 29, 2025
Key Facts
Patch immediately- CVE-2020-17087 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Windows 10 1507 (Microsoft), Windows 10 1607 (Microsoft), Windows 10 1803 (Microsoft) and 20 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 22, 2020. Public exploit code is available.
- EPSS estimates a 5.4% probability of exploitation in the next 30 days.
- Fixed versions are available, including Windows 10 publication, Windows 10 1507 publication, Windows 10 1607 publication.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
5.4%
Higher than 92.6% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2020-17087 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Windows Kernel Local Elevation of Privilege Vulnerability
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 3, 2021 | May 3, 2022 | Not reported |
| Industry KEV feed | Oct 22, 2020 | May 3, 2022 | Not reported |
| CIRCL KEV | Nov 3, 2021 | May 3, 2022 | Not reported |
| ENISA EUVD | Nov 3, 2021 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
64 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 1507Microsoft | See advisory | publication |
| Windows 10 1607Microsoft | See advisory | publication |
| Windows 10 1803Microsoft | See advisory | publication |
| Windows 10 1809Microsoft | See advisory | publication |
| Windows 10Microsoft | 1903 | publication |
Patched Releases
Windows 10
publication
Windows 10 1507
publication
Windows 10 1607
publication
Windows 10 1803
publication
Windows 10 1809
publication
Windows 10 1909
publication
windows 10 20H2
publication
Windows 7
publication
Windows 8.1
publication
Windows Rt 8.1
publication
Windows Server 1903
publication
Windows Server 1909
publication
Windows Server 2004
publication
windows server 2008 R2
publication
Windows Server 2008 Sp2
publication
Windows Server 2012
publication
windows server 2012 R2
publication
Windows Server 2016
publication
Windows Server 2019
publication
windows server 20H2
publication
Timeline
Added to Industry KEV feed
Oct 22, 2020
Publicly disclosed
Nov 11, 2020
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Last updated
Oct 29, 2025
Weakness Type
- CWE-131 Incorrect Calculation of Buffer Size
References
FAQ
Common Questions.
Windows Kernel Local Elevation of Privilege Vulnerability
Affected: Windows 10 1507 (Microsoft); Windows 10 1607 (Microsoft); Windows 10 1803 (Microsoft), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 22, 2020.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of May 3, 2022.
Public exploit code is available.
Fixed versions are available, including Windows 10 publication, Windows 10 1507 publication, Windows 10 1607 publication.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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