CVE-2026-116714: Windows privilege escalation in AppX (high)

Summary

Windows AppX Deployment Service contains a flaw in its authorization checks that lets a user who already has low-privilege access on the local machine gain higher privileges. No user interaction is needed, and the bug gives the attacker elevated control over the system.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

Incorrect authorization in Windows AppX Deployment Service allows an authorized attacker to elevate privileges locally.

cve.now Index

9Pcve.now Index 9 of 100 · methodology v3 · provisional

Exploitation0/40No signal
Exposure?/25Unknown. No advisory context yet
Reach?/20Unknown. No tracked technology or package matched
Severity8.8/10CVSS 7.8, total technical impact per CISA
No patch0/5No signal

What would change the score

Would score about 64 if added to CISA KEV
Would score about 59 if CISA's SSVC rates exploitation active
Would score about 31 if advisories confirm default setups are exposed

How the score works · Rankings

What to do

Upgrade to a fixed version: Windows 10.0.19044.7846, 10.0.19045.7846, 10.0.22631.7711 · Windows Server 10.0.20348.5870.

Check your systems with an agent

Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.

Check whether my systems are affected by CVE-2026-116714 (Windows AppX Deployment Service Elevation of Privilege Vulnerability), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-116714 (entry last updated 2026-11-10):
Affected:
- Microsoft Windows 10 Version 21H2: from 10.0.19044.0, fixed in 10.0.19044.7846
- Microsoft Windows 10 Version 22H2: from 10.0.19045.0, fixed in 10.0.19045.7846
- Microsoft Windows 11 version 23H2: from 10.0.22631.0, fixed in 10.0.22631.7711
- Microsoft Windows 11 Version 23H2: from 10.0.22631.0, fixed in 10.0.22631.7711
- Microsoft Windows Server 2022: from 10.0.20348.0, fixed in 10.0.20348.5870
Fixed versions: 10.0.19044.7846, 10.0.19045.7846, 10.0.22631.7711, 10.0.20348.5870.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: CVE-2026-116714 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-116714 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-116714
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Entry: https://cve.now/CVE-2026-116714
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-116714.

Timeline

Nov 10, 2026, 6:22 PM UTCCVE published
Nov 10, 2026, 7:58 PM UTCCISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
Nov 10, 2026, 7:59 PM UTCRecord last updated
Nov 10, 2026, 9:06 PM UTCFirst seen by cve.now

Affected versions

Microsoft Windows 10 Version 21H2
From 10.0.19044.0 · fixed in 10.0.19044.7846
Microsoft Windows 10 Version 22H2
From 10.0.19045.0 · fixed in 10.0.19045.7846
Microsoft Windows 11 version 23H2
From 10.0.22631.0 · fixed in 10.0.22631.7711
Microsoft Windows 11 Version 23H2
From 10.0.22631.0 · fixed in 10.0.22631.7711
Microsoft Windows Server 2022
From 10.0.20348.0 · fixed in 10.0.20348.5870

Evidence 3

Vendor advisory · 1

Establishes: Affected and fixed versions.

Patch
msrc.microsoft.com · update-guide/vulnerability/CVE-2026-116714

CVE record · 2

Establishes: The identifier and description.

Record
CVE List · CVE-2026-116714
Record
NVD · CVE-2026-116714

Corrections

None so far.

Something wrong on this page? Report an error. Every fix is listed here.

Questions about CVE-2026-116714

Is CVE-2026-116714 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-116714?

Windows 10 Version 21H2: from 10.0.19044.0 before 10.0.19044.7846. Windows 10 Version 22H2: from 10.0.19045.0 before 10.0.19045.7846. Windows 11 version 23H2: from 10.0.22631.0 before 10.0.22631.7711. Windows 11 Version 23H2: from 10.0.22631.0 before 10.0.22631.7711. Windows Server 2022: from 10.0.20348.0 before 10.0.20348.5870.Source: cve.now feed data

How do I fix CVE-2026-116714?

Upgrade to a fixed version: Windows 10.0.19044.7846, 10.0.19045.7846, 10.0.22631.7711 · Windows Server 10.0.20348.5870.Source: cve.now feed data

Windows AppX Deployment Service Elevation of Privilege Vulnerability