CVE-2026-70096

criticalpriority · track · 39EPSS 0.011 · 65 %ileDEFRNLUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.09% (65th) EPSS

CVSS 9.8 · critical

Is it mine?

146 products

Check your exposure

Who says so?

4 sources

cert_bund · msrc_csaf · ncsc_nl · certfr

EPSS · scored 2026-10-27

Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to execute code over a network.

remediations

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

A vendor fix is available.

FixedMicrosoft 365 Apps for Enterprise for 32-bit Systemsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft 365 Apps for Enterprise for 64-bit Systemsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Office 365 for Macmsrc_csaf
16.114.26101123:Security Update:https://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac
https://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac
FixedMicrosoft Office LTSC 2021 for 32-bit editionsmsrc_csaf
16.0.14334.20974:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Office LTSC 2021 for 64-bit editionsmsrc_csaf
16.0.14334.20974:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Office LTSC 2024 for 32-bit editionsmsrc_csaf
16.0.17932.21056:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Office LTSC 2024 for 64-bit editionsmsrc_csaf
16.0.17932.21056:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Office LTSC for Mac 2021msrc_csaf
16.114.26101123:Security Update:https://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac
https://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac
FixedMicrosoft Office LTSC for Mac 2024msrc_csaf
16.114.26101123:Security Update:https://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac
https://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac
FixedWindows 10 Version 1607 for 32-bit Systemsmsrc_csaf
10.0.14393.9612:Security Update:https://support.microsoft.com/help/5126868
https://support.microsoft.com/help/5126868
FixedWindows 10 Version 1607 for x64-based Systemsmsrc_csaf
10.0.14393.9612:Security Update:https://support.microsoft.com/help/5126868
https://support.microsoft.com/help/5126868
FixedWindows 10 Version 1809 for 32-bit Systemsmsrc_csaf
10.0.17763.9376:Security Update:https://support.microsoft.com/help/5126651
https://support.microsoft.com/help/5126651
FixedWindows 10 Version 1809 for x64-based Systemsmsrc_csaf
10.0.17763.9376:Security Update:https://support.microsoft.com/help/5126651
https://support.microsoft.com/help/5126651
FixedWindows 10 Version 21H2 for 32-bit Systemsmsrc_csaf
10.0.19044.7807:Security Update:https://support.microsoft.com/help/5126657
https://support.microsoft.com/help/5126657
FixedWindows 10 Version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.19044.7807:Security Update:https://support.microsoft.com/help/5126657
https://support.microsoft.com/help/5126657
FixedWindows 10 Version 21H2 for x64-based Systemsmsrc_csaf
10.0.19044.7807:Security Update:https://support.microsoft.com/help/5126657
https://support.microsoft.com/help/5126657
FixedWindows 10 Version 22H2 for 32-bit Systemsmsrc_csaf
10.0.19045.7807:Security Update:https://support.microsoft.com/help/5126657
https://support.microsoft.com/help/5126657
FixedWindows 10 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.19045.7807:Security Update:https://support.microsoft.com/help/5126657
https://support.microsoft.com/help/5126657
FixedWindows 10 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.19045.7807:Security Update:https://support.microsoft.com/help/5126657
https://support.microsoft.com/help/5126657
FixedWindows 11 Version 23H2 for ARM64-based Systemsmsrc_csaf
10.0.22631.7652:Security Update:https://support.microsoft.com/help/5126653
https://support.microsoft.com/help/5126653
FixedWindows 11 Version 23H2 for x64-based Systemsmsrc_csaf
10.0.22631.7652:Security Update:https://support.microsoft.com/help/5126653
https://support.microsoft.com/help/5126653
FixedWindows 11 Version 24H2 for ARM64-based Systemsmsrc_csaf
10.0.26100.9711:Security Update:https://support.microsoft.com/help/5127648
https://support.microsoft.com/help/5127648
FixedWindows 11 Version 24H2 for x64-based Systemsmsrc_csaf
10.0.26100.9711:Security Update:https://support.microsoft.com/help/5127648
https://support.microsoft.com/help/5127648
FixedWindows 11 Version 25H2 for ARM64-based Systemsmsrc_csaf
10.0.26200.9711:Security Update:https://support.microsoft.com/help/5127648
https://support.microsoft.com/help/5127648
FixedWindows 11 Version 25H2 for x64-based Systemsmsrc_csaf
10.0.26200.9711:Security Update:https://support.microsoft.com/help/5127648
https://support.microsoft.com/help/5127648
FixedWindows 11 Version 26H1 for ARM64-based Systemsmsrc_csaf
10.0.28000.3231:Security Update:https://support.microsoft.com/help/5127646
https://support.microsoft.com/help/5127646
FixedWindows 11 Version 26H2 for ARM64-based Systemsmsrc_csaf
10.0.26300.9711:Security Update:https://support.microsoft.com/help/5127648
https://support.microsoft.com/help/5127648
FixedWindows 11 Version 26H2 for x64-based Systemsmsrc_csaf
10.0.26300.9711:Security Update:https://support.microsoft.com/help/5127648
https://support.microsoft.com/help/5127648
FixedWindows 11 version 26H1 for x64-based Systemsmsrc_csaf
10.0.28000.3231:Security Update:https://support.microsoft.com/help/5127646
https://support.microsoft.com/help/5127646
FixedWindows Server 2012msrc_csaf
6.2.9200.26434:Security Update:https://support.microsoft.com/help/5126835
https://support.microsoft.com/help/5126835
FixedWindows Server 2012 (Server Core installation)msrc_csaf
6.2.9200.26434:Security Update:https://support.microsoft.com/help/5126835
https://support.microsoft.com/help/5126835
FixedWindows Server 2012 R2msrc_csaf
6.3.9600.23470:Security Update:https://support.microsoft.com/help/5126836
https://support.microsoft.com/help/5126836
FixedWindows Server 2012 R2 (Server Core installation)msrc_csaf
6.3.9600.23470:Security Update:https://support.microsoft.com/help/5126836
https://support.microsoft.com/help/5126836
FixedWindows Server 2016msrc_csaf
10.0.14393.9612:Security Update:https://support.microsoft.com/help/5126868
https://support.microsoft.com/help/5126868
FixedWindows Server 2016 (Server Core installation)msrc_csaf
10.0.14393.9612:Security Update:https://support.microsoft.com/help/5126868
https://support.microsoft.com/help/5126868
FixedWindows Server 2019msrc_csaf
10.0.17763.9376:Security Update:https://support.microsoft.com/help/5126651
https://support.microsoft.com/help/5126651
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.9376:Security Update:https://support.microsoft.com/help/5126651
https://support.microsoft.com/help/5126651
FixedWindows Server 2022msrc_csaf
10.0.20348.5761:Security Update:https://support.microsoft.com/help/5126655
https://support.microsoft.com/help/5126655
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.5761:Security Update:https://support.microsoft.com/help/5126655
https://support.microsoft.com/help/5126655
FixedWindows Server 2025msrc_csaf
10.0.26100.33650:Security Update:https://support.microsoft.com/help/5126646
https://support.microsoft.com/help/5126646
FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.33650:Security Update:https://support.microsoft.com/help/5126646
https://support.microsoft.com/help/5126646

cvss

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

9.8

010

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

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · secure@microsoft.com USexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-122USCWE-122USCWE-122US

affected products (146)

Products and version ranges known to be affected.

Microsoft 365 Appsall versionscert_bundDEcpe:/a:microsoft:365_apps:-
Microsoft Excelall versionscert_bundDEcpe:/a:microsoft:excel:-
Microsoft Microsoft Office LTSC 2021all versionscert_bundDEcpe:/a:microsoft:microsoft_office_ltsc_2021:-
Microsoft Microsoft Office LTSC 2024all versionscert_bundDEcpe:/a:microsoft:microsoft_office_ltsc_2024:-
Microsoft Office 365 for Macall versionscert_bundDEcpe:/a:microsoft:office_365:for_mac
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 PowerPointall versionscert_bundDEcpe:/a:microsoft:powerpoint:-
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 Skype for Business Server 2015 CU13all versionscert_bundDEcpe:/a:microsoft:skype:for_business_server_2015_cu13
Microsoft Skype for Business Server 2019 CU8all versionscert_bundDEcpe:/a:microsoft:skype:for_business_server_2019_cu8
Microsoft Skype for Business Server Subscription Edition CU1all versionscert_bundDEcpe:/a:microsoft:skype:for_business_server_subscription_edition_cu1
Microsoft Wordall versionscert_bundDEcpe:/a:microsoft:word:-
Microsoft Microsoft 365 Apps for Enterprise for 32-bit Systemsall versionsfixedmsrc_csafUS
Microsoft Microsoft 365 Apps for Enterprise for 32-bit Systems< https://aka.ms/OfficeSecurityReleasesmsrc_csafUS
Microsoft Microsoft 365 Apps for Enterprise for 64-bit Systemsall versionsfixedmsrc_csafUS

showing 20 of 146

advisories (7)

Vendor and ecosystem advisories describing this.

NCSC-2026-0422Kwetsbaarheden verholpen in Microsoft OfficeNL2026-10-13csaf · ncsc_nlNL
Microsoft heeft xxx kwetsbaarheden verholpen in diverse Office producten, zoals Word, Excel, Access, Outlook, Visio, Sharepoint en PowerPoint, maar ook subcomponenten als Shell, Azure Key Vault en Click-to-Run.
NCSC-2026-0423Kwetsbaarheden verholpen in Microsoft WindowsNL2026-10-13csaf · ncsc_nlNL
Microsoft heeft 1159 kwetsbaarheden verholpen in Windows.
WID-SEC-W-2026-3892Microsoft Windows und Windows Server: Mehrere SchwachstellenDeutsch2026-10-13csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in verschiedenen Versionen von Microsoft Windows Server und Microsoft Windows ausnutzen, um seine Privilegien auf administrative Rechte zu erhöhen, um beliebigen Code auszuführen, um Informationen offenzulegen, um einen Denial of Service herbeizuführen, um den Benutzer zu täuschen und andere, nicht näher spezifizierte Auswirkungen zu verursachen.
WID-SEC-W-2026-3916Microsoft Office Produkte: Mehrere Schwachstellen ermöglichen PrivilegieneskalationDeutsch2026-10-13csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in verschiedenen Microsoft Office Produkten ausnutzen, um seine Privilegien zu erhöhen, um Code auszuführen, um Informationen offenzulegen oder zu manipulieren und um Sicherheitsmechanismen zu umgehen.
msrc_CVE-2026-70096Windows Rich Text Edit Control Remote Code Execution Vulnerability2026-10-13csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
CERTFR-2026-AVI-1312Multiples vulnérabilités dans Microsoft OfficeFrançais2026-10-14vendor · certfrFR
CERTFR-2026-AVI-1314Multiples vulnérabilités dans Microsoft WindowsFrançais2026-10-14vendor · certfrFR

sources

Which sources assert this record, and when.

cert_bund msrc_csaf ncsc_nl certfr NVD CVE.org MITRE

published 2026-10-13modified 2026-10-16

references (1) nvd

External citations — patches, advisories, analysis.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70096

scry

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