CVE-2026-77500

Windows Device Association Service Elevation of Privilege Vulnerability

Products / packages Microsoft Windows 10 Version 1607 · Microsoft Windows 10 Version 1809 · Microsoft Windows 10 Version 21H2 · 10 more

Published 08/09/2026, 17:13:21 UTC

Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 14/11/2026, 22:20:30 UTC

microsoft · CVSS:3.1 · 7.8

Assessment vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Severity

high7.8

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Fix status not established

No structured fix or guidance is available here. Check the latest publisher advisory.

What this means

A weakness in Windows Device Association Service allows an authorized attacker to elevate privileges locally in affected Windows versions, including Windows 10 and Windows 11. The vulnerability is due to the release of an invalid pointer or reference. Affected versions include Windows 10 1607, 1809, 21H2, and 22H2, and Windows 11 23H2, 24H2, 25H2, and 26H1.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Microsoft · microsoft

Windows 10 Version 1607

1 range

microsoft version evidence

Platforms: 32-bit Systems, x64-based Systems

Check a product version

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affected

10.0.14393.0 → before 10.0.14393.9512

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 10 Version 1809

1 range

microsoft version evidence

Platforms: 32-bit Systems, x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.17763.0 → before 10.0.17763.9245

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 10 Version 21H2

1 range

microsoft version evidence

Platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.19044.0 → before 10.0.19044.7725

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 10 Version 22H2

1 range

microsoft version evidence

Platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.19045.0 → before 10.0.19045.7725

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 version 23H2

1 range

microsoft version evidence

Platforms: ARM64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.22631.0 → before 10.0.22631.7582

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 Version 23H2

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.22631.0 → before 10.0.22631.7582

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 Version 24H2

1 range

microsoft version evidence

Platforms: ARM64-based Systems, x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.26100.0 → before 10.0.26100.9445

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 Version 25H2

1 range

microsoft version evidence

Platforms: ARM64-based Systems, x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.26200.0 → before 10.0.26200.9445

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 version 26H1

1 range

microsoft version evidence

Platforms: ARM64-based Systems, x64-based Systems

Check a product version

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affected

10.0.28000.0 → before 10.0.28000.2954

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2016

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.14393.0 → before 10.0.14393.9512

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2016 (Server Core installation)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.14393.0 → before 10.0.14393.9512

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2019

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.17763.0 → before 10.0.17763.9245

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2019 (Server Core installation)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.17763.0 → before 10.0.17763.9245

custom versions

Other versions: unknown

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

Release of invalid pointer or reference in Windows Device Association Service allows an authorized attacker to elevate privileges locally.

References

1 sources

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77500

Vendor advisorymicrosoft

Inside the record

Evidence available

Package identity · not supplied

Version evidence

Remediation guidance · not supplied

Weakness classification

Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-77500

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-763 ↗

CWE-763: Release of Invalid Pointer or Reference

microsoft

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

microsoft · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*

From (inclusive): 10.0.17763.0

After:

Through (inclusive):

Before: 10.0.17763.9245

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*

From (inclusive): 10.0.17763.0

After:

Through (inclusive):

Before: 10.0.17763.9245

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*

From (inclusive): 10.0.17763.0

After:

Through (inclusive):

Before: 10.0.17763.9245

Vulnerable product

cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*

From (inclusive): 10.0.19044.0

After:

Through (inclusive):

Before: 10.0.19044.7725

Vulnerable product

cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*

From (inclusive): 10.0.19045.0

After:

Through (inclusive):

Before: 10.0.19045.7725

Vulnerable product

cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*

From (inclusive): 10.0.26200.0

After:

Through (inclusive):

Before: 10.0.26200.9445

Vulnerable product

cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*

From (inclusive): 10.0.22631.0

After:

Through (inclusive):

Before: 10.0.22631.7582

Vulnerable product

cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*

From (inclusive): 10.0.22631.0

After:

Through (inclusive):

Before: 10.0.22631.7582

Vulnerable product

cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*

From (inclusive): 10.0.26100.0

After:

Through (inclusive):

Before: 10.0.26100.9445

Vulnerable product

cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*

From (inclusive): 10.0.28000.0

After:

Through (inclusive):

Before: 10.0.28000.2954

Vulnerable product

cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*

From (inclusive): 10.0.14393.0

After:

Through (inclusive):

Before: 10.0.14393.9512

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

From (inclusive): 10.0.14393.0

After:

Through (inclusive):

Before: 10.0.14393.9512

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

From (inclusive): 10.0.14393.0

After:

Through (inclusive):

Before: 10.0.14393.9512

Applicability preview

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            "vulnerable": true,
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            "versionStartIncluding": "10.0.14393.0",
            "versionEndExcluding": "10.0.14393.9512"
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            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "10.0.14393.0",
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Contributing organizations · 2

microsoft

Assigning organization

2026-11-10

CISA-ADP

Additional data publisher

2026-09-09

Timeline

All times UTC

8 Sept 2026, 17:13
Advisory published
Publication date supplied by the source.
10 Nov 2026, 21:32
Source updated
Latest modification date supplied by the source.
10 Nov 2026, 22:49
Last imported by cve.new
Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes

No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: 0.33% estimated probability in the next 30 days. 2026-11-13 · FIRST EPSS.

CISA-ADP · SSVC

CISA Coordinator · 2026-09-09

Exploitation: none
Automatable: no
Technical Impact: total

SSVC describes the publisher’s decision context. Your organization’s exposure and priorities may differ.

Record identifiers

Aliases: None recorded

Source evidence

Request a correction or dispute

Start with the assigning organization for this record. Include the CVE ID, the disputed information, and supporting evidence. A dispute does not itself reject a record.

Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-77500

Enrichment coverage

NVDRefresh failed

Previous evidence retained where available.

GHSAAvailable

Checked 14/11/2026, 11:15:34 UTC

EUVDAvailable

Checked 14/11/2026, 11:10:33 UTC

EPSSAvailable

Checked 14/11/2026, 11:05:35 UTC

Additional source evidence

FIRST EPSS · CVE-2026-77500

EPSS 0.33% probability of exploitation in the next 30 days. Percentile: 26.96% · 2026-11-13

Checked 14/11/2026, 11:05:35 UTC

ENISA EUVD · EUVD-2026-73268

CVSS 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Checked 14/11/2026, 11:10:33 UTC

GitHub Advisory Database · GHSA-hmxr-qc3q-973q

CVSS 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Checked 14/11/2026, 11:15:34 UTC

Sponsored by MoxsoBuild security habits with adaptive training and phishing simulations.View as JSON

Windows Device Association Service Elevation of Privilege Vulnerability

Severity and exploitation

What this means

Attack conditions

Affected versions

Windows 10 Version 1607

affected

unaffected

unknown

Windows 10 Version 1809

affected

unaffected

unknown

Windows 10 Version 21H2

affected

unaffected

unknown

Windows 10 Version 22H2

affected

unaffected

unknown

Windows 11 version 23H2

affected

unaffected

unknown

Windows 11 Version 23H2

affected

unaffected

unknown

Windows 11 Version 24H2

affected

unaffected

unknown

Windows 11 Version 25H2

affected

unaffected

unknown

Windows 11 version 26H1

affected

unaffected

unknown

Windows Server 2016

affected

unaffected

unknown

Windows Server 2016 (Server Core installation)

affected

unaffected

unknown

Windows Server 2019

affected

unaffected

unknown

Windows Server 2019 (Server Core installation)

affected

unaffected

unknown

What to do

Public exploit evidence

Original source description

References

Inside the record

Evidence available

Original records

Underlying weaknesses

Environment requirements

Timeline

Advisory published

Source updated

Last imported by cve.new

What changed