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Vulnerability Details :

CVE-2026-40360

Summary
Assigner-microsoft
Assigner Org ID-f38d906d-7342-40ea-92c1-6c4a2c6478c8
Published At-12 May, 2026 | 16:58
Updated At-15 May, 2026 | 17:12
Rejected At-
Credits

Microsoft Excel Information Disclosure Vulnerability

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:microsoft
Assigner Org ID:f38d906d-7342-40ea-92c1-6c4a2c6478c8
Published At:12 May, 2026 | 16:58
Updated At:15 May, 2026 | 17:12
Rejected At:
â–¼CVE Numbering Authority (CNA)
Microsoft Excel Information Disclosure Vulnerability

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

Affected Products
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft 365 Apps for Enterprise
Platforms
  • 32-bit Systems
  • x64-based Systems
Versions
Affected
  • From 16.0.1 before https://aka.ms/OfficeSecurityReleases (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft Excel 2016
Platforms
  • 32-bit Systems
  • x64-based Systems
Versions
Affected
  • From 16.0.0.0 before 16.0.5552.1000 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft Office 2019
Platforms
  • 32-bit Systems
  • x64-based Systems
Versions
Affected
  • From 19.0.0 before https://aka.ms/OfficeSecurityReleases (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft Office LTSC 2021
Platforms
  • 32-bit Systems
  • x64-based Systems
Versions
Affected
  • From 16.0.1 before https://aka.ms/OfficeSecurityReleases (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft Office LTSC 2024
Platforms
  • 32-bit Systems
  • x64-based Systems
Versions
Affected
  • From 16.0.0 before https://aka.ms/OfficeSecurityReleases (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft Office LTSC for Mac 2021
Versions
Affected
  • From 16.0.1 before 16.109.26051019 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Microsoft Office LTSC for Mac 2024
Versions
Affected
  • From 16.0.0 before 16.109.26051019 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Office Online Server
Versions
Affected
  • From 16.0.0.0 before 16.0.10417.20128 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-125CWE-125: Out-of-bounds Read
Type: CWE
CWE ID: CWE-125
Description: CWE-125: Out-of-bounds Read
Metrics
VersionBase scoreBase severityVector
3.17.8HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Version: 3.1
Base score: 7.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40360
vendor-advisory
patch
Hyperlink: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40360
Resource:
vendor-advisory
patch
â–¼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:secure@microsoft.com
Published At:12 May, 2026 | 18:17
Updated At:12 May, 2026 | 18:17

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.17.8HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Type: Primary
Version: 3.1
Base score: 7.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-125Primarysecure@microsoft.com
CWE ID: CWE-125
Type: Primary
Source: secure@microsoft.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40360secure@microsoft.com
N/A
Hyperlink: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40360
Source: secure@microsoft.com
Resource: N/A

Change History

0
Information is not available yet

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Vendor-Microsoft Corporation
Product-365_appsoffice_long_term_servicing_channelMicrosoft 365 Apps for EnterpriseMicrosoft Office LTSC 2024
CWE ID-CWE-426
Untrusted Search Path
CVE-2025-21394
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.35% / 57.52%
||
7 Day CHG~0.00%
Published-11 Feb, 2025 | 17:58
Updated-26 Feb, 2026 | 19:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Excel Remote Code Execution Vulnerability

Microsoft Excel Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-365_appsofficeoffice_long_term_servicing_channelexceloffice_online_serverMicrosoft Excel 2016Microsoft 365 Apps for EnterpriseMicrosoft Office 2019Microsoft Office LTSC for Mac 2021Microsoft Office LTSC 2024Microsoft Office LTSC for Mac 2024Microsoft Office LTSC 2021Office Online Server
CWE ID-CWE-416
Use After Free
CVE-2025-21397
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.35% / 57.52%
||
7 Day CHG~0.00%
Published-11 Feb, 2025 | 17:58
Updated-26 Feb, 2026 | 19:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-365_appsoffice_long_term_servicing_channelMicrosoft Office LTSC 2021Microsoft 365 Apps for EnterpriseMicrosoft Office LTSC 2024
CWE ID-CWE-416
Use After Free
CVE-2025-21387
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.48% / 65.43%
||
7 Day CHG~0.00%
Published-11 Feb, 2025 | 17:58
Updated-26 Feb, 2026 | 19:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Excel Remote Code Execution Vulnerability

Microsoft Excel Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-365_appsofficeoffice_long_term_servicing_channelexceloffice_online_serverMicrosoft Excel 2016Microsoft 365 Apps for EnterpriseMicrosoft Office 2019Microsoft Office LTSC for Mac 2021Microsoft Office LTSC 2024Microsoft Office LTSC for Mac 2024Microsoft Office LTSC 2021Office Online Server
CWE ID-CWE-416
Use After Free
CVE-2025-21366
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-2.06% / 84.11%
||
7 Day CHG-0.06%
Published-14 Jan, 2025 | 18:04
Updated-26 Feb, 2026 | 19:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Access Remote Code Execution Vulnerability

Microsoft Access Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-office365_appsaccessoffice_long_term_servicing_channelMicrosoft 365 Apps for EnterpriseMicrosoft Office 2019Microsoft Access 2016 (32-bit edition)Microsoft Access 2016Microsoft Office LTSC 2024Microsoft Office LTSC 2021
CWE ID-CWE-416
Use After Free
CVE-2025-21381
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.43% / 62.67%
||
7 Day CHG~0.00%
Published-11 Feb, 2025 | 17:58
Updated-13 Feb, 2026 | 19:44
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Excel Remote Code Execution Vulnerability

Microsoft Excel Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-365_appsofficeoffice_long_term_servicing_channelexceloffice_online_serverMicrosoft 365 Apps for EnterpriseMicrosoft Office LTSC for Mac 2021Microsoft Office LTSC for Mac 2024Microsoft Excel 2016Office Online ServerMicrosoft Office LTSC 2021Microsoft Office 2019Microsoft Office LTSC 2024
CWE ID-CWE-822
Untrusted Pointer Dereference
CVE-2026-20837
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.06% / 19.96%
||
7 Day CHG+0.02%
Published-13 Jan, 2026 | 17:56
Updated-01 Apr, 2026 | 13:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Windows Media Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-windows_10_21h2windows_10_22h2windows_server_2022_23h2windows_server_2025windows_10_1809windows_server_2022windows_11_24h2windows_server_2019windows_11_23h2windows_11_25h2Windows Server 2022Windows Server 2025Windows Server 2022, 23H2 Edition (Server Core installation)Windows Server 2025 (Server Core installation)Windows 11 Version 24H2Windows 10 Version 21H2Windows Server 2019 (Server Core installation)Windows 11 version 22H3Windows 11 Version 23H2Windows 10 Version 22H2Windows Server 2019Windows 11 Version 25H2Windows 10 Version 1809
CWE ID-CWE-122
Heap-based Buffer Overflow
CVE-2025-21354
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-8.4||HIGH
EPSS-1.73% / 82.63%
||
7 Day CHG~0.00%
Published-14 Jan, 2025 | 18:04
Updated-26 Feb, 2026 | 19:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Excel Remote Code Execution Vulnerability

Microsoft Excel Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-officeoffice_long_term_servicing_channeloffice_online_server365_appsMicrosoft 365 Apps for EnterpriseMicrosoft Office 2019Microsoft Office LTSC for Mac 2021Microsoft Office LTSC 2024Microsoft Office LTSC for Mac 2024Microsoft Office LTSC 2021Office Online Server
CWE ID-CWE-822
Untrusted Pointer Dereference
CVE-2025-21361
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.52% / 66.95%
||
7 Day CHG~0.00%
Published-14 Jan, 2025 | 18:04
Updated-26 Feb, 2026 | 19:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Outlook Remote Code Execution Vulnerability

Microsoft Outlook Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-officeoutlookMicrosoft Office LTSC for Mac 2024Microsoft Outlook for MacMicrosoft Office LTSC for Mac 2021
CWE ID-CWE-641
Improper Restriction of Names for Files and Other Resources
CVE-2025-21187
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.46% / 64.20%
||
7 Day CHG~0.00%
Published-14 Jan, 2025 | 18:04
Updated-26 Feb, 2026 | 19:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Power Automate Remote Code Execution Vulnerability

Microsoft Power Automate Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-power_automate_for_desktopPower Automate for Desktop
CWE ID-CWE-94
Improper Control of Generation of Code ('Code Injection')
CVE-2025-21180
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.40% / 60.88%
||
7 Day CHG~0.00%
Published-11 Mar, 2025 | 16:59
Updated-13 Feb, 2026 | 19:38
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Windows exFAT File System Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows exFAT File System allows an unauthorized attacker to execute code locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-windows_server_2022_23h2windows_11_22h2windows_10_22h2windows_11_24h2windows_10_1507windows_10_1607windows_server_2012windows_server_2025windows_server_2019windows_11_23h2windows_server_2008windows_10_1809windows_server_2016windows_10_21h2windows_server_2022Windows Server 2025Windows Server 2008 R2 Service Pack 1Windows 11 Version 23H2Windows Server 2012 (Server Core installation)Windows 10 Version 1809Windows Server 2008 Service Pack 2 (Server Core installation)Windows Server 2008 R2 Service Pack 1 (Server Core installation)Windows Server 2022, 23H2 Edition (Server Core installation)Windows 11 version 22H3Windows Server 2016 (Server Core installation)Windows 10 Version 22H2Windows Server 2019Windows Server 2022Windows 10 Version 1607Windows 11 Version 24H2Windows Server 2025 (Server Core installation)Windows Server 2019 (Server Core installation)Windows Server 2016Windows 11 version 22H2Windows Server 2012 R2Windows 10 Version 1507Windows 10 Version 21H2Windows Server 2008 Service Pack 2Windows Server 2012Windows Server 2012 R2 (Server Core installation)
CWE ID-CWE-122
Heap-based Buffer Overflow
CVE-2025-21344
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.35% / 57.56%
||
7 Day CHG~0.00%
Published-14 Jan, 2025 | 18:04
Updated-26 Feb, 2026 | 19:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft SharePoint Server Remote Code Execution Vulnerability

Microsoft SharePoint Server Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-sharepoint_serverMicrosoft SharePoint Enterprise Server 2016Microsoft SharePoint Server Subscription EditionMicrosoft SharePoint Server 2019
CWE ID-CWE-20
Improper Input Validation
CVE-2025-21345
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.92% / 76.19%
||
7 Day CHG~0.00%
Published-14 Jan, 2025 | 18:04
Updated-26 Feb, 2026 | 19:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Office Visio Remote Code Execution Vulnerability

Microsoft Office Visio Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-365_appsofficeoffice_long_term_servicing_channelMicrosoft Office LTSC 2021Microsoft 365 Apps for EnterpriseMicrosoft Office 2019Microsoft Office LTSC 2024
CWE ID-CWE-416
Use After Free
CVE-2025-21186
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-1.13% / 78.53%
||
7 Day CHG~0.00%
Published-14 Jan, 2025 | 18:04
Updated-26 Feb, 2026 | 19:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Access Remote Code Execution Vulnerability

Microsoft Access Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-office365_appsaccessoffice_long_term_servicing_channelMicrosoft 365 Apps for EnterpriseMicrosoft Office 2019Microsoft Access 2016 (32-bit edition)Microsoft Access 2016Microsoft Office LTSC 2024Microsoft Office LTSC 2021
CWE ID-CWE-122
Heap-based Buffer Overflow
CVE-2025-21346
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.1||HIGH
EPSS-0.31% / 54.20%
||
7 Day CHG~0.00%
Published-14 Jan, 2025 | 18:04
Updated-13 Feb, 2026 | 19:56
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Office Security Feature Bypass Vulnerability

Microsoft Office Security Feature Bypass Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-365_appsofficeoffice_long_term_servicing_channelMicrosoft 365 Apps for EnterpriseMicrosoft Office 2016Microsoft Office LTSC 2021Microsoft Office 2019Microsoft Office LTSC 2024
CWE ID-CWE-693
Protection Mechanism Failure
CVE-2025-21326
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.54% / 67.80%
||
7 Day CHG~0.00%
Published-14 Jan, 2025 | 18:04
Updated-13 Feb, 2026 | 19:56
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Internet Explorer Remote Code Execution Vulnerability

Internet Explorer Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-windows_server_2022_23h2windows_server_2025Windows Server 2025 (Server Core installation)Windows Server 2022, 23H2 Edition (Server Core installation)Windows Server 2025
CWE ID-CWE-843
Access of Resource Using Incompatible Type ('Type Confusion')
CVE-2025-21392
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.35% / 57.52%
||
7 Day CHG~0.00%
Published-11 Feb, 2025 | 17:58
Updated-26 Feb, 2026 | 19:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-365_appsofficeoffice_long_term_servicing_channelMicrosoft Office 2016Microsoft 365 Apps for EnterpriseMicrosoft Office 2019Microsoft Office LTSC for Mac 2021Microsoft Office LTSC 2024Microsoft Office LTSC for Mac 2024Microsoft Office LTSC 2021
CWE ID-CWE-416
Use After Free
CVE-2025-21395
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-2.06% / 84.11%
||
7 Day CHG~0.00%
Published-14 Jan, 2025 | 18:04
Updated-26 Feb, 2026 | 19:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Access Remote Code Execution Vulnerability

Microsoft Access Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-office365_appsaccessoffice_long_term_servicing_channelMicrosoft 365 Apps for EnterpriseMicrosoft Office 2019Microsoft Access 2016 (32-bit edition)Microsoft Access 2016Microsoft Office LTSC 2024Microsoft Office LTSC 2021
CWE ID-CWE-122
Heap-based Buffer Overflow
CVE-2026-20949
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.03% / 9.03%
||
7 Day CHG+0.01%
Published-13 Jan, 2026 | 17:57
Updated-01 Apr, 2026 | 13:49
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Excel Security Feature Bypass Vulnerability

Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-365_appsoffice_long_term_servicing_channelMicrosoft Office LTSC for Mac 2024Microsoft Office LTSC 2024Microsoft Office LTSC for Mac 2021Microsoft 365 Apps for EnterpriseMicrosoft Office LTSC 2021
CWE ID-CWE-284
Improper Access Control
CVE-2026-20951
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.10% / 26.75%
||
7 Day CHG+0.03%
Published-13 Jan, 2026 | 17:56
Updated-01 Apr, 2026 | 13:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft SharePoint Server Remote Code Execution Vulnerability

Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-sharepoint_serverMicrosoft SharePoint Enterprise Server 2016Microsoft SharePoint Server 2019Microsoft SharePoint Server Subscription Edition
CWE ID-CWE-20
Improper Input Validation
CVE-2026-26143
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.11% / 28.30%
||
7 Day CHG~0.00%
Published-14 Apr, 2026 | 16:57
Updated-12 May, 2026 | 17:38
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft PowerShell Security Feature Bypass Vulnerability

Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-powershellPowerShell 7.4PowerShell 7.5
CWE ID-CWE-20
Improper Input Validation
CVE-2026-20957
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.16% / 36.61%
||
7 Day CHG+0.07%
Published-13 Jan, 2026 | 17:57
Updated-01 Apr, 2026 | 13:49
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Excel Remote Code Execution Vulnerability

Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-exceloffice_online_serveroffice_long_term_servicing_channeloffice365_appsMicrosoft Office LTSC for Mac 2024Microsoft Excel 2016Microsoft Office LTSC 2024Microsoft Office 2019Office Online ServerMicrosoft Office LTSC for Mac 2021Microsoft 365 Apps for EnterpriseMicrosoft Office LTSC 2021
CWE ID-CWE-122
Heap-based Buffer Overflow
CWE ID-CWE-191
Integer Underflow (Wrap or Wraparound)
CVE-2026-21259
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.03% / 9.11%
||
7 Day CHG~0.00%
Published-10 Feb, 2026 | 17:51
Updated-11 May, 2026 | 21:25
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Excel Elevation of Privilege Vulnerability

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-365_appsexceloffice_long_term_servicing_channeloffice_online_serverofficeMicrosoft 365 Apps for EnterpriseMicrosoft Office 2019Microsoft Office LTSC 2021Office Online ServerMicrosoft Office LTSC 2024Microsoft Excel 2016
CWE ID-CWE-122
Heap-based Buffer Overflow
CWE ID-CWE-787
Out-of-bounds Write
CVE-2026-21514
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-4.48% / 89.21%
||
7 Day CHG-0.91%
Published-10 Feb, 2026 | 17:51
Updated-11 May, 2026 | 21:25
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Known KEV||Action Due Date - 2026-03-03||Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Microsoft Word Security Feature Bypass Vulnerability

Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-office_long_term_servicing_channel365_appsMicrosoft 365 Apps for EnterpriseMicrosoft Office LTSC for Mac 2021Microsoft Office LTSC 2021Microsoft Office LTSC for Mac 2024Microsoft Office LTSC 2024Office
CWE ID-CWE-807
Reliance on Untrusted Inputs in a Security Decision
CVE-2025-27749
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-1.21% / 79.14%
||
7 Day CHG~0.00%
Published-08 Apr, 2025 | 17:23
Updated-13 Feb, 2026 | 19:32
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Office Remote Code Execution Vulnerability

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-officeoffice_long_term_servicing_channel365_appsMicrosoft Office LTSC 2024Microsoft 365 Apps for EnterpriseMicrosoft Office LTSC for Mac 2021Microsoft Office LTSC for Mac 2024Microsoft Office LTSC 2021Microsoft Office 2019Microsoft Office 2016
CWE ID-CWE-416
Use After Free
CVE-2026-20955
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-0.13% / 31.60%
||
7 Day CHG+0.05%
Published-13 Jan, 2026 | 17:56
Updated-01 Apr, 2026 | 13:48
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Microsoft Excel Remote Code Execution Vulnerability

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Action-Not Available
Vendor-Microsoft Corporation
Product-office_long_term_servicing_channeloffice_online_serveroffice365_appsMicrosoft Office LTSC for Mac 2024Microsoft Office LTSC 2021Microsoft Office LTSC 2024Microsoft Office 2019Microsoft Office LTSC for Mac 2021Microsoft 365 Apps for EnterpriseOffice Online Server
CWE ID-CWE-822
Untrusted Pointer Dereference
CVE-2020-17108
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-9.68% / 93.00%
||
7 Day CHG~0.00%
Published-11 Nov, 2020 | 06:48
Updated-10 Sep, 2024 | 15:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
HEVC Video Extensions Remote Code Execution Vulnerability

HEVC Video Extensions Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-hevc_video_extensionsHEVC Video Extensions
CVE-2020-17150
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-11.47% / 93.69%
||
7 Day CHG~0.00%
Published-09 Dec, 2020 | 23:36
Updated-28 Aug, 2025 | 23:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Visual Studio Code Remote Code Execution Vulnerability

Visual Studio Code Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-tslintVisual Studio Code TS-Lint Extension
CVE-2020-17110
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-9.68% / 93.00%
||
7 Day CHG~0.00%
Published-11 Nov, 2020 | 06:48
Updated-10 Sep, 2024 | 15:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
HEVC Video Extensions Remote Code Execution Vulnerability

HEVC Video Extensions Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-hevc_video_extensionsHEVC Video Extensions
CVE-2020-17109
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-9.47% / 92.92%
||
7 Day CHG~0.00%
Published-11 Nov, 2020 | 06:48
Updated-10 Sep, 2024 | 15:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
HEVC Video Extensions Remote Code Execution Vulnerability

HEVC Video Extensions Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-hevc_video_extensionsHEVC Video Extensions
CVE-2020-17082
Matching Score-8
Assigner-Microsoft Corporation
ShareView Details
Matching Score-8
Assigner-Microsoft Corporation
CVSS Score-7.8||HIGH
EPSS-9.64% / 92.98%
||
7 Day CHG~0.00%
Published-11 Nov, 2020 | 06:48
Updated-10 Sep, 2024 | 15:52
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Raw Image Extension Remote Code Execution Vulnerability

Raw Image Extension Remote Code Execution Vulnerability

Action-Not Available
Vendor-Microsoft Corporation
Product-raw_image_extensionRaw Image Extension
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