CVE-2026-68880

highpriority · track · 32EPSS 0.008 · 55 %ileDEUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.77% (55th) EPSS

CVSS 8 · high

Is it mine?

82 products

Check your exposure

Who says so?

2 sources

cert_bund · msrc_csaf

EPSS · scored 2026-10-26

Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges over a network.

remediations

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

A vendor fix is available.

FixedWindows 10 Version 1607 for 32-bit Systemsmsrc_csaf
10.0.14393.9512:Security Update:https://support.microsoft.com/help/5123099
https://support.microsoft.com/help/5123099
FixedWindows 10 Version 1607 for x64-based Systemsmsrc_csaf
10.0.14393.9512:Security Update:https://support.microsoft.com/help/5123099
https://support.microsoft.com/help/5123099
FixedWindows 10 Version 1809 for 32-bit Systemsmsrc_csaf
10.0.17763.9245:Security Update:https://support.microsoft.com/help/5122876
https://support.microsoft.com/help/5122876
FixedWindows 10 Version 1809 for x64-based Systemsmsrc_csaf
10.0.17763.9245:Security Update:https://support.microsoft.com/help/5122876
https://support.microsoft.com/help/5122876
FixedWindows 10 Version 21H2 for 32-bit Systemsmsrc_csaf
10.0.19044.7725:Security Update:https://support.microsoft.com/help/5122878
https://support.microsoft.com/help/5122878
FixedWindows 10 Version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.19044.7725:Security Update:https://support.microsoft.com/help/5122878
https://support.microsoft.com/help/5122878
FixedWindows 10 Version 21H2 for x64-based Systemsmsrc_csaf
10.0.19044.7725:Security Update:https://support.microsoft.com/help/5122878
https://support.microsoft.com/help/5122878
FixedWindows 10 Version 22H2 for 32-bit Systemsmsrc_csaf
10.0.19045.7725:Security Update:https://support.microsoft.com/help/5122878
https://support.microsoft.com/help/5122878
FixedWindows 10 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.19045.7725:Security Update:https://support.microsoft.com/help/5122878
https://support.microsoft.com/help/5122878
FixedWindows 10 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.19045.7725:Security Update:https://support.microsoft.com/help/5122878
https://support.microsoft.com/help/5122878
FixedWindows 11 Version 23H2 for ARM64-based Systemsmsrc_csaf
10.0.22631.7582:Security Update:https://support.microsoft.com/help/5122880
https://support.microsoft.com/help/5122880
FixedWindows 11 Version 23H2 for x64-based Systemsmsrc_csaf
10.0.22631.7582:Security Update:https://support.microsoft.com/help/5122880
https://support.microsoft.com/help/5122880
FixedWindows 11 Version 24H2 for ARM64-based Systemsmsrc_csaf
10.0.26100.9445:Security Update:https://support.microsoft.com/help/5124008
https://support.microsoft.com/help/5124008
FixedWindows 11 Version 24H2 for x64-based Systemsmsrc_csaf
10.0.26100.9445:Security Update:https://support.microsoft.com/help/5124008
https://support.microsoft.com/help/5124008
FixedWindows 11 Version 25H2 for ARM64-based Systemsmsrc_csaf
10.0.26200.9445:Security Update:https://support.microsoft.com/help/5124008
https://support.microsoft.com/help/5124008
FixedWindows 11 Version 25H2 for x64-based Systemsmsrc_csaf
10.0.26200.9445:Security Update:https://support.microsoft.com/help/5124008
https://support.microsoft.com/help/5124008
FixedWindows 11 Version 26H1 for ARM64-based Systemsmsrc_csaf
10.0.28000.2954:Security Update:https://support.microsoft.com/help/5124012
https://support.microsoft.com/help/5124012
FixedWindows 11 version 26H1 for x64-based Systemsmsrc_csaf
10.0.28000.2954:Security Update:https://support.microsoft.com/help/5124012
https://support.microsoft.com/help/5124012
FixedWindows Server 2012msrc_csaf
6.2.9200.26349:Monthly Rollup:https://support.microsoft.com/help/5123065
https://support.microsoft.com/help/5123065
FixedWindows Server 2012 (Server Core installation)msrc_csaf
6.2.9200.26349:Monthly Rollup:https://support.microsoft.com/help/5123065
https://support.microsoft.com/help/5123065
FixedWindows Server 2012 R2msrc_csaf
6.3.9600.23398:Monthly Rollup:https://support.microsoft.com/help/5123066
https://support.microsoft.com/help/5123066
FixedWindows Server 2012 R2 (Server Core installation)msrc_csaf
6.3.9600.23398:Monthly Rollup:https://support.microsoft.com/help/5123066
https://support.microsoft.com/help/5123066
FixedWindows Server 2016msrc_csaf
10.0.14393.9512:Security Update:https://support.microsoft.com/help/5123099
https://support.microsoft.com/help/5123099
FixedWindows Server 2016 (Server Core installation)msrc_csaf
10.0.14393.9512:Security Update:https://support.microsoft.com/help/5123099
https://support.microsoft.com/help/5123099
FixedWindows Server 2019msrc_csaf
10.0.17763.9245:Security Update:https://support.microsoft.com/help/5122876
https://support.microsoft.com/help/5122876
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.9245:Security Update:https://support.microsoft.com/help/5122876
https://support.microsoft.com/help/5122876
FixedWindows Server 2022msrc_csaf
10.0.20348.5622:Security Update:https://support.microsoft.com/help/5122882
https://support.microsoft.com/help/5122882
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.5622:Security Update:https://support.microsoft.com/help/5122882
https://support.microsoft.com/help/5122882
FixedWindows Server 2025msrc_csaf
10.0.26100.33438:Security Update:https://support.microsoft.com/help/5122871
https://support.microsoft.com/help/5122871
FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.33438:Security Update:https://support.microsoft.com/help/5122871
https://support.microsoft.com/help/5122871

cvss

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

8.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Hprimary · secure@microsoft.com USexploitability 2.1 · impact 5.9

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.18highCVSS:3.1/AV:N/AC:L/PR:L/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-122USCWE-122USCWE-197US

affected products (82)

Products and version ranges known to be affected.

Microsoft Windows 10all versionscert_bundDEcpe:/o:microsoft:windows_10:-
Microsoft Windows 11all versionscert_bundDEcpe:/o:microsoft:windows_11:-
Microsoft Windows Server 2012all versionscert_bundDEcpe:/o:microsoft:windows_server_2012:-
Microsoft Windows Server 2012 R2all versionscert_bundDEcpe:/o:microsoft:windows_server_2012_r2:-
Microsoft Windows Server 2016all versionscert_bundDEcpe:/o:microsoft:windows_server_2016:-
Microsoft Windows Server 2019all versionscert_bundDEcpe:/o:microsoft:windows_server_2019:-
Microsoft Windows Server 2022all versionscert_bundDEcpe:/o:microsoft:windows_server_2022:-
Microsoft Windows Server 2025all versionscert_bundDEcpe:/o:microsoft:windows_server_2025:-
Microsoft Windows 10 Version 1607 for 32-bit Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 1607 for 32-bit Systems< 10.0.14393.9512msrc_csafUS
Microsoft Windows 10 Version 1607 for x64-based Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 1607 for x64-based Systems< 10.0.14393.9512msrc_csafUS
Microsoft Windows 10 Version 1809 for 32-bit Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 1809 for 32-bit Systems< 10.0.17763.9245msrc_csafUS
Microsoft Windows 10 Version 1809 for x64-based Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 1809 for x64-based Systems< 10.0.17763.9245msrc_csafUS
Microsoft Windows 10 Version 21H2 for 32-bit Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 21H2 for 32-bit Systems< 10.0.19044.7725msrc_csafUS
Microsoft Windows 10 Version 21H2 for ARM64-based Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 21H2 for ARM64-based Systems< 10.0.19044.7725msrc_csafUS

showing 20 of 82

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3243Microsoft Windows: Mehrere SchwachstellenDeutsch2026-09-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in verschiedenen Versionen von Microsoft Windows Server, Microsoft Windows 10 und Microsoft Windows 11 ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service herbeizuführen, um Informationen offenzulegen und um beliebigen Code auszuführen.
msrc_CVE-2026-68880Windows Win32k Elevation of Privilege Vulnerability2026-09-08csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

sources

Which sources assert this record, and when.

cert_bund msrc_csaf NVD CVE.org MITRE

published 2026-09-08modified 2026-09-24

references (1) nvd

External citations — patches, advisories, analysis.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68880PatchVendor Advisory

scry

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