Public proof of conceptFix available

CVE-2017-11783

A public proof of concept exists; no exploitation attested.

Published2017-10-13

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Microsoft Windows 8.1, Windows Server 2012 R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an elevation of privilege vulnerability in the way it handles calls to Advanced Local Procedure Call (ALPC), aka "Windows Elevation of Privilege Vulnerability".

Timeline

dates in UTC

2017-10-1313:29CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-11783?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-11783?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Microsoft windows 10

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD
1511.x	= 1511	no fix published	NVD
1607.x	= 1607	no fix published	NVD
1703.x	= 1703	no fix published	NVD

Microsoft windows 8.1

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Microsoft windows rt 8.1

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

portal.msrc.microsoft.comPatch · Vendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedSheisback/CVE-2017-11783

Sources

NVDCVSS 3.07read 2026-10-23
NVDCVSS 2.06.9read 2026-10-23
FIRST EPSSEPSS score2.5 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2017-10-13
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2017-11783?

Is CVE-2017-11783 actively exploited?

Active exploitation of CVE-2017-11783 has not been confirmed. Its EPSS score was 2.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-11783?

CVE-2017-11783 has a CVSS v3 base score of 7 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

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