CVE-2017-0263
HighExploitedPublic exploitThe kernel-mode drivers in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka…
Published May 12, 2017 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2017-0263 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Windows 10 1507 (Microsoft), Windows 10 1511 (Microsoft), Windows 10 1607 (Microsoft) and 8 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 9, 2017. Public exploit code is available.
- EPSS estimates a 10% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- 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)
10%
Higher than 95.5% 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-2017-0263 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
The kernel-mode drivers in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Feb 10, 2022 | Aug 10, 2022 | Not reported |
| Industry KEV feed | May 9, 2017 | Aug 10, 2022 | Not reported |
| CIRCL KEV | Feb 10, 2022 | Aug 10, 2022 | Not reported |
| ENISA EUVD | Feb 10, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
13 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 1507Microsoft | See advisory | n/a |
| Windows 10 1511Microsoft | See advisory | n/a |
| Windows 10 1607Microsoft | See advisory | n/a |
| Windows 10 1703Microsoft | See advisory | n/a |
| Windows 7Microsoft | See advisory | n/a |
Timeline
Added to Industry KEV feed
May 9, 2017
Publicly disclosed
May 12, 2017
Added to CISA KEV
Feb 10, 2022
Added to CIRCL KEV
Feb 10, 2022
Added to ENISA EUVD
Feb 10, 2022
Last updated
Apr 22, 2026
Weakness Type
- CWE-416 Use After Free
References
- advisory98258
- advisory1038449
- patchhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0263
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
The kernel-mode drivers in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerabili…
Affected: Windows 10 1507 (Microsoft); Windows 10 1511 (Microsoft); Windows 10 1607 (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 May 9, 2017.
Yes. It was added on Feb 10, 2022 with a federal remediation due date of Aug 10, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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