---
id: "CVE-2026-95963"
page: "https://infrastack.ai/live/CVE-2026-95963"
kind: "vulnerability"
aliases: ["CVE-2026-95963"]
title: "Windows Data Sharing Service Client: link following lets a local user gain SYSTEM-level privileges"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "Windows 10 1607", "fixed": ["10.0.14393.9688"], "affected": ">=10.0.14393.0, <10.0.14393.9688", "ecosystem": "microsoft"}, {"name": "Windows 10 1809", "fixed": ["10.0.17763.9487"], "affected": ">=10.0.17763.0, <10.0.17763.9487", "ecosystem": "microsoft"}, {"name": "Windows 10 21H2", "fixed": ["10.0.19044.7846"], "affected": ">=10.0.19044.0, <10.0.19044.7846", "ecosystem": "microsoft"}, {"name": "Windows 10 22H2", "fixed": ["10.0.19045.7846"], "affected": ">=10.0.19045.0, <10.0.19045.7846", "ecosystem": "microsoft"}, {"name": "Windows 11 23H2", "fixed": ["10.0.22631.7711"], "affected": ">=10.0.22631.0, <10.0.22631.7711", "ecosystem": "microsoft"}]
ecosystems: []
tags: ["data-sharing-service-client", "local-privilege-escalation", "microsoft", "other", "windows"]
not_affected_if: ["no-local-users", "unknown"]
published_at: "2026-11-10T19:21:52+00:00"
first_seen_at: "2026-11-10T19:25:25+00:00"
updated_at: "2026-11-10T20:18:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-95963", "first_seen_at": "2026-11-10T19:25:25+00:00"}, {"source": "analyst", "url": "https://radar.offseq.com/threat/cve-2026-95963-cwe-59-link-following-in-microsoft-windows-10-version-1607-aa86d9a493734708", "first_seen_at": "2026-11-10T20:18:45+00:00", "cites": ["https://radar.offseq.com/threat/cve-2026-95963-cwe-59-link-following-in-microsoft-windows-10-version-1607-aa86d9a493734708"]}]
exploit_sources: []
---

# Windows Data Sharing Service Client: link following lets a local user gain SYSTEM-level privileges

Link for people: https://infrastack.ai/live/CVE-2026-95963 (this .md is for agents)

Microsoft Windows Data Sharing Service Client follows links before accessing a file (CWE-59). A local user with low privileges can elevate privileges. Microsoft rated it CVSS 7.8; no exploitation or public PoC known as of 10 Nov 2026.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- microsoft:Windows 10 1607 affected >=10.0.14393.0, <10.0.14393.9688 fixed 10.0.14393.9688
- microsoft:Windows 10 1809 affected >=10.0.17763.0, <10.0.17763.9487 fixed 10.0.17763.9487
- microsoft:Windows 10 21H2 affected >=10.0.19044.0, <10.0.19044.7846 fixed 10.0.19044.7846
- microsoft:Windows 10 22H2 affected >=10.0.19045.0, <10.0.19045.7846 fixed 10.0.19045.7846
- microsoft:Windows 11 23H2 affected >=10.0.22631.0, <10.0.22631.7711 fixed 10.0.22631.7711

## How to check

Run winver or [Environment]::OSVersion in PowerShell and compare the build to the fixed builds listed in the fix field; any lower build is exposed. Check the MSRC page for the full product list (OffSeq shows only part of it).

## Fix

Install the November 2026 Windows cumulative update: Windows 10 1607 build 10.0.14393.9688, 1809 10.0.17763.9487, 21H2 10.0.19044.7846, 22H2 10.0.19045.7846, Windows 11 23H2 10.0.22631.7711 (per OffSeq's copy of the CVE record; the MSRC page could not be read, and OffSeq truncates the list, +8 more products).

## Timeline

- 2026-11-10T19:25:25+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-95963
- 2026-11-10T20:18:45+00:00 analyst https://radar.offseq.com/threat/cve-2026-95963-cwe-59-link-following-in-microsoft-windows-10-version-1607-aa86d9a493734708 — Vendor is Microsoft (Windows component, CNA Microsoft). Versions come from the OffSeq mirror of the CVE record only; MSRC page was unreadable, so nothing is marked verified. Product list is truncated at the source (+8 more). Not exploited, no PoC.

## Documents

- [describes] OffSeq: CVE-2026-95963 Windows link following https://radar.offseq.com/threat/cve-2026-95963-cwe-59-link-following-in-microsoft-windows-10-version-1607-aa86d9a493734708

## From the sources

Improper link resolution before file access ('link following') in Data Sharing Service Client allows an authorized attacker to elevate privileges locally.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_