CVE-2025-26687

highpriority · track · 0EPSS 0.011 · 66 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.14% (66th) EPSS

CVSS 7.5 · high

Is it mine?

244 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Use after free in Windows Win32K - GRFX allows an unauthorized attacker to elevate privileges over a network.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedMicrosoft Office for Androidmsrc_csaf
16.0.18730.20000:Security Update:https://support.google.com/googleplay/answer/113412?hl=en
https://support.google.com/googleplay/answer/113412?hl=en
FixedMicrosoft Office for Universalmsrc_csaf
16.0.14326.22331:Security Update:https://support.microsoft.com/en-us/account-billing/get-updates-for-apps-and-games-in-microsoft-store-a1fe19c0-532d-ec47-7035-d1c5a1dd464f
https://support.microsoft.com/en-us/account-billing/get-updates-for-apps-and-games-in-microsoft-store-a1fe19c0-532d-ec47-7035-d1c5a1dd464f
FixedWindows 10 Version 1607 for 32-bit Systemsmsrc_csaf
10.0.14393.7969:Security Update:https://support.microsoft.com/help/5055521
https://support.microsoft.com/help/5055521
FixedWindows 10 Version 1607 for x64-based Systemsmsrc_csaf
10.0.14393.7969:Security Update:https://support.microsoft.com/help/5055521
https://support.microsoft.com/help/5055521
FixedWindows 10 Version 1809 for 32-bit Systemsmsrc_csaf
10.0.17763.7136:Security Update:https://support.microsoft.com/help/5055519
https://support.microsoft.com/help/5055519
FixedWindows 10 Version 1809 for x64-based Systemsmsrc_csaf
10.0.17763.7136:Security Update:https://support.microsoft.com/help/5055519
https://support.microsoft.com/help/5055519
FixedWindows 10 Version 21H2 for 32-bit Systemsmsrc_csaf
10.0.19044.5737:Security Update:https://support.microsoft.com/help/5055518
https://support.microsoft.com/help/5055518
FixedWindows 10 Version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.19044.5737:Security Update:https://support.microsoft.com/help/5055518
https://support.microsoft.com/help/5055518
FixedWindows 10 Version 21H2 for x64-based Systemsmsrc_csaf
10.0.19044.5737:Security Update:https://support.microsoft.com/help/5055518
https://support.microsoft.com/help/5055518
FixedWindows 10 Version 22H2 for 32-bit Systemsmsrc_csaf
10.0.19045.5737:Security Update:https://support.microsoft.com/help/5055518
https://support.microsoft.com/help/5055518
FixedWindows 10 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.19045.5737:Security Update:https://support.microsoft.com/help/5055518
https://support.microsoft.com/help/5055518
FixedWindows 10 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.19045.5737:Security Update:https://support.microsoft.com/help/5055518
https://support.microsoft.com/help/5055518
FixedWindows 10 for 32-bit Systemsmsrc_csaf
10.0.10240.20978:Security Update:https://support.microsoft.com/help/5055547
https://support.microsoft.com/help/5055547
FixedWindows 10 for x64-based Systemsmsrc_csaf
10.0.10240.20978:Security Update:https://support.microsoft.com/help/5055547
https://support.microsoft.com/help/5055547
FixedWindows 11 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.22621.5189:Security Update:https://support.microsoft.com/help/5055528
https://support.microsoft.com/help/5055528
FixedWindows 11 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.22621.5189:Security Update:https://support.microsoft.com/help/5055528
https://support.microsoft.com/help/5055528
FixedWindows 11 Version 23H2 for ARM64-based Systemsmsrc_csaf
10.0.22631.5189:Security Update:https://support.microsoft.com/help/5055528
https://support.microsoft.com/help/5055528
FixedWindows 11 Version 23H2 for x64-based Systemsmsrc_csaf
10.0.22631.5189:Security Update:https://support.microsoft.com/help/5055528
https://support.microsoft.com/help/5055528
FixedWindows 11 Version 24H2 for ARM64-based Systemsmsrc_csaf
10.0.26100.3775:Security Update:https://support.microsoft.com/help/5055523
https://support.microsoft.com/help/5055523
FixedWindows 11 Version 24H2 for x64-based Systemsmsrc_csaf
10.0.26100.3775:Security Update:https://support.microsoft.com/help/5055523
https://support.microsoft.com/help/5055523
FixedWindows Server 2008 R2 for x64-based Systems Service Pack 1msrc_csaf
6.1.7601.27670:Monthly Rollup:https://support.microsoft.com/help/5055561
https://support.microsoft.com/help/5055561
FixedWindows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)msrc_csaf
6.1.7601.27670:Monthly Rollup:https://support.microsoft.com/help/5055561
https://support.microsoft.com/help/5055561
FixedWindows Server 2008 for 32-bit Systems Service Pack 2msrc_csaf
6.0.6003.23220:Security Only:https://support.microsoft.com/help/5055596
https://support.microsoft.com/help/5055596
FixedWindows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)msrc_csaf
6.0.6003.23220:Security Only:https://support.microsoft.com/help/5055596
https://support.microsoft.com/help/5055596
FixedWindows Server 2008 for x64-based Systems Service Pack 2msrc_csaf
6.0.6003.23220:Security Only:https://support.microsoft.com/help/5055596
https://support.microsoft.com/help/5055596
FixedWindows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)msrc_csaf
6.0.6003.23220:Security Only:https://support.microsoft.com/help/5055596
https://support.microsoft.com/help/5055596
FixedWindows Server 2012msrc_csaf
6.2.9200.25423:Monthly Rollup:https://support.microsoft.com/help/5055581
https://support.microsoft.com/help/5055581
FixedWindows Server 2012 (Server Core installation)msrc_csaf
6.2.9200.25423:Monthly Rollup:https://support.microsoft.com/help/5055581
https://support.microsoft.com/help/5055581
FixedWindows Server 2012 R2msrc_csaf
6.3.9600.22523:Monthly Rollup:https://support.microsoft.com/help/5055557
https://support.microsoft.com/help/5055557
FixedWindows Server 2012 R2 (Server Core installation)msrc_csaf
6.3.9600.22523:Monthly Rollup:https://support.microsoft.com/help/5055557
https://support.microsoft.com/help/5055557
FixedWindows Server 2016msrc_csaf
10.0.14393.7969:Security Update:https://support.microsoft.com/help/5055521
https://support.microsoft.com/help/5055521
FixedWindows Server 2016 (Server Core installation)msrc_csaf
10.0.14393.7969:Security Update:https://support.microsoft.com/help/5055521
https://support.microsoft.com/help/5055521
FixedWindows Server 2019msrc_csaf
10.0.17763.7136:Security Update:https://support.microsoft.com/help/5055519
https://support.microsoft.com/help/5055519
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.7136:Security Update:https://support.microsoft.com/help/5055519
https://support.microsoft.com/help/5055519
FixedWindows Server 2022msrc_csaf
10.0.20348.3453:Security Update:https://support.microsoft.com/help/5055526
https://support.microsoft.com/help/5055526
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.3453:Security Update:https://support.microsoft.com/help/5055526
https://support.microsoft.com/help/5055526
FixedWindows Server 2022, 23H2 Edition (Server Core installation)msrc_csaf
10.0.25398.1551:Security Update:https://support.microsoft.com/help/5055527
https://support.microsoft.com/help/5055527
FixedWindows Server 2025msrc_csaf
10.0.26100.3775:Security Update:https://support.microsoft.com/help/5055523
https://support.microsoft.com/help/5055523
FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.3775:Security Update:https://support.microsoft.com/help/5055523
https://support.microsoft.com/help/5055523

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highAV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.6 · impact 5.9

v3.16.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · NCSC-NL NL

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USCWE-416USCWE-416USCWE-416US

affected products (244)

Products and version ranges known to be affected.

Hitachi Network Attached Storageall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:-
Microsoft 365 Appsall versionscert_bundDEcpe:/a:microsoft:365_apps:-
Microsoft Access 2016all versionscert_bundDEcpe:/a:microsoft:access_2016:-
Microsoft Excel 2016all versionscert_bundDEcpe:/a:microsoft:excel_2016:-
Microsoft Office 2016all versionscert_bundDEcpe:/a:microsoft:office_2016:-
Microsoft Office 2019all versionscert_bundDEcpe:/a:microsoft:office_2019:-
Microsoft Office LTSC 2021all versionscert_bundDEcpe:/a:microsoft:office:ltsc_2021
Microsoft Office LTSC 2024all versionscert_bundDEcpe:/a:microsoft:office:ltsc_2024
Microsoft Office LTSC for Mac 2021all versionscert_bundDEcpe:/a:microsoft:office:ltsc_for_mac_2021
Microsoft Office LTSC for Mac 2024all versionscert_bundDEcpe:/a:microsoft:office:ltsc_for_mac_2024
Microsoft Office Online Serverall versionscert_bundDEcpe:/a:microsoft:office_online_server:-
Microsoft Office for Androidall versionscert_bundDEcpe:/a:microsoft:office:for_android
Microsoft Office for Universalall versionscert_bundDEcpe:/a:microsoft:office:for_universal
Microsoft OneNote 2016all versionscert_bundDEcpe:/a:microsoft:onenote_2016:-
Microsoft OneNote for Macall versionscert_bundDEcpe:/a:microsoft:onenote:for_mac
Microsoft SharePoint Enterprise Server 2016all versionscert_bundDEcpe:/a:microsoft:sharepoint:enterprise_server_2016
Microsoft SharePoint Server 2019all versionscert_bundDEcpe:/a:microsoft:sharepoint_server_2019:-
Microsoft SharePoint Server Subscription Editionall versionscert_bundDEcpe:/a:microsoft:sharepoint:server_subscription_edition
Microsoft SharePoint Server Subscription Edition Language Packall versionscert_bundDEcpe:/a:microsoft:sharepoint:server_subscription_edition_language_pack
Microsoft Windows 10all versionscert_bundDEcpe:/o:microsoft:windows_10:-

showing 20 of 244

advisories (5)

Vendor and ecosystem advisories describing this.

NCSC-2025-0107Kwetsbaarheden verholpen in Microsoft OfficeNL2025-04-08csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in diverse Office producten.
NCSC-2025-0112Kwetsbaarheden verholpen in Microsoft WindowsNL2025-04-08csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in Windows.
WID-SEC-W-2025-0744Microsoft Windows: Mehrere SchwachstellenDeutsch2025-04-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Server, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows 10, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows, Microsoft Windows Server 2022 und Microsoft Windows 11 ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen, vertrauliche Informationen preiszugeben, Sicherheitsmaßnahmen zu umgehen, einen Spoofing-Angriff durchzuführen und eine Denial-of-Service-Situation herbeizuführen.
WID-SEC-W-2025-0769Microsoft Office: Mehrere SchwachstellenDeutsch2025-04-08csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Microsoft Excel 2016, Microsoft Word 2016, Microsoft Access 2016, Microsoft Office 2016, Microsoft OneNote 2016, Microsoft Office Online Server, Microsoft SharePoint, Microsoft Office 2019, Microsoft SharePoint Server 2019, Microsoft 365 Apps, Microsoft Office und Microsoft OneNote ausnutzen, um beliebigen Code auszuführen, sich erhöhte Rechte zu verschaffen und Sicherheitsvorkehrungen zu umgehen.
msrc_CVE-2025-26687Win32k Elevation of Privilege Vulnerability2025-04-08csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl msrc_csaf NVD CVE.org MITRE

published 2025-04-08modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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