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600 vulnerabilities found for Microsoft Office LTSC 2021 by Microsoft

CVE-2026-21514 (GCVE-0-2026-21514)

Vulnerability from nvd – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:23
VLAI?
Title
Microsoft Word Security Feature Bypass Vulnerability
Summary
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
CWE
  • CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.106.26020821 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21511 (GCVE-0-2026-21511)

Vulnerability from nvd – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:23
VLAI?
Title
Microsoft Outlook Spoofing Vulnerability
Summary
Deserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Enterprise Server 2016 Affected: 16.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server 2019 Affected: 16.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server Subscription Edition Affected: 16.0.0 , < 16.0.19127.20518 (custom)
Create a notification for this product.
    Microsoft Microsoft Word 2016 Affected: 16.0.1 , < 16.0.5539.1002 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21261 (GCVE-0-2026-21261)

Vulnerability from nvd – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:23
VLAI?
Title
Microsoft Excel Information Disclosure Vulnerability
Summary
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21260 (GCVE-0-2026-21260)

Vulnerability from nvd – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:22
VLAI?
Title
Microsoft Outlook Spoofing Vulnerability
Summary
Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Outlook 2016 Affected: 16.0.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Enterprise Server 2016 Affected: 16.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server 2019 Affected: 16.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server Subscription Edition Affected: 16.0.0 , < 16.0.19127.20518 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21259 (GCVE-0-2026-21259)

Vulnerability from nvd – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:22
VLAI?
Title
Microsoft Excel Elevation of Privilege Vulnerability
Summary
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges locally.
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21258 (GCVE-0-2026-21258)

Vulnerability from nvd – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:22
VLAI?
Title
Microsoft Excel Information Disclosure Vulnerability
Summary
Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CWE
  • CWE-20 - Improper Input Validation
  • CWE-125 - Out-of-bounds Read
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21509 (GCVE-0-2026-21509)

Vulnerability from nvd – Published: 2026-01-26 17:06 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Office Security Feature Bypass Vulnerability
Summary
Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally.
CWE
  • CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2016 Affected: 16.0.0 , < 16.0.5539.1001 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < 16.0.10417.20095 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20957 (GCVE-0-2026-20957)

Vulnerability from nvd – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5535.1000 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20083 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20956 (GCVE-0-2026-20956)

Vulnerability from nvd – Published: 2026-01-13 17:56 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CWE
  • CWE-822 - Untrusted Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20955 (GCVE-0-2026-20955)

Vulnerability from nvd – Published: 2026-01-13 17:56 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CWE
  • CWE-822 - Untrusted Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20083 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20953 (GCVE-0-2026-20953)

Vulnerability from nvd – Published: 2026-01-13 17:56 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Office Remote Code Execution Vulnerability
Summary
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2016 Affected: 16.0.0 , < 16.0.5535.1000 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20952 (GCVE-0-2026-20952)

Vulnerability from nvd – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Office Remote Code Execution Vulnerability
Summary
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2016 Affected: 16.0.0 , < 16.0.5535.1000 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20950 (GCVE-0-2026-20950)

Vulnerability from nvd – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5535.1000 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20083 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20949 (GCVE-0-2026-20949)

Vulnerability from nvd – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Security Feature Bypass Vulnerability
Summary
Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20948 (GCVE-0-2026-20948)

Vulnerability from nvd – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Word Remote Code Execution Vulnerability
Summary
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CWE
  • CWE-822 - Untrusted Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Enterprise Server 2016 Affected: 16.0.0 , < 16.0.5535.1001 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server 2019 Affected: 16.0.0 , < 16.0.10417.20083 (custom)
Create a notification for this product.
    Microsoft Microsoft Word 2016 Affected: 16.0.1 , < 16.0.5535.1000 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20946 (GCVE-0-2026-20946)

Vulnerability from nvd – Published: 2026-01-13 17:56 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5535.1000 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21261 (GCVE-0-2026-21261)

Vulnerability from cvelistv5 – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:23
VLAI?
Title
Microsoft Excel Information Disclosure Vulnerability
Summary
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21511 (GCVE-0-2026-21511)

Vulnerability from cvelistv5 – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:23
VLAI?
Title
Microsoft Outlook Spoofing Vulnerability
Summary
Deserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Enterprise Server 2016 Affected: 16.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server 2019 Affected: 16.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server Subscription Edition Affected: 16.0.0 , < 16.0.19127.20518 (custom)
Create a notification for this product.
    Microsoft Microsoft Word 2016 Affected: 16.0.1 , < 16.0.5539.1002 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21514 (GCVE-0-2026-21514)

Vulnerability from cvelistv5 – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:23
VLAI?
Title
Microsoft Word Security Feature Bypass Vulnerability
Summary
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
CWE
  • CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.106.26020821 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21260 (GCVE-0-2026-21260)

Vulnerability from cvelistv5 – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:22
VLAI?
Title
Microsoft Outlook Spoofing Vulnerability
Summary
Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Outlook 2016 Affected: 16.0.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Enterprise Server 2016 Affected: 16.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server 2019 Affected: 16.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server Subscription Edition Affected: 16.0.0 , < 16.0.19127.20518 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21258 (GCVE-0-2026-21258)

Vulnerability from cvelistv5 – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:22
VLAI?
Title
Microsoft Excel Information Disclosure Vulnerability
Summary
Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CWE
  • CWE-20 - Improper Input Validation
  • CWE-125 - Out-of-bounds Read
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.106.26020821 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21259 (GCVE-0-2026-21259)

Vulnerability from cvelistv5 – Published: 2026-02-10 17:51 – Updated: 2026-02-23 16:22
VLAI?
Title
Microsoft Excel Elevation of Privilege Vulnerability
Summary
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges locally.
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5539.1002 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20097 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-21509 (GCVE-0-2026-21509)

Vulnerability from cvelistv5 – Published: 2026-01-26 17:06 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Office Security Feature Bypass Vulnerability
Summary
Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally.
CWE
  • CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2016 Affected: 16.0.0 , < 16.0.5539.1001 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < 16.0.10417.20095 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20957 (GCVE-0-2026-20957)

Vulnerability from cvelistv5 – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5535.1000 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20083 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20952 (GCVE-0-2026-20952)

Vulnerability from cvelistv5 – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Office Remote Code Execution Vulnerability
Summary
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2016 Affected: 16.0.0 , < 16.0.5535.1000 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
Show details on NVD website

{
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CVE-2026-20950 (GCVE-0-2026-20950)

Vulnerability from cvelistv5 – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Excel 2016 Affected: 16.0.0.0 , < 16.0.5535.1000 (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20083 (custom)
Create a notification for this product.
Show details on NVD website

{
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CVE-2026-20949 (GCVE-0-2026-20949)

Vulnerability from cvelistv5 – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Security Feature Bypass Vulnerability
Summary
Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20948 (GCVE-0-2026-20948)

Vulnerability from cvelistv5 – Published: 2026-01-13 17:57 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Word Remote Code Execution Vulnerability
Summary
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CWE
  • CWE-822 - Untrusted Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Enterprise Server 2016 Affected: 16.0.0 , < 16.0.5535.1001 (custom)
Create a notification for this product.
    Microsoft Microsoft SharePoint Server 2019 Affected: 16.0.0 , < 16.0.10417.20083 (custom)
Create a notification for this product.
    Microsoft Microsoft Word 2016 Affected: 16.0.1 , < 16.0.5535.1000 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20956 (GCVE-0-2026-20956)

Vulnerability from cvelistv5 – Published: 2026-01-13 17:56 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CWE
  • CWE-822 - Untrusted Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-20955 (GCVE-0-2026-20955)

Vulnerability from cvelistv5 – Published: 2026-01-13 17:56 – Updated: 2026-02-22 17:01
VLAI?
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CWE
  • CWE-822 - Untrusted Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.105.26011018 (custom)
Create a notification for this product.
    Microsoft Office Online Server Affected: 16.0.0.0 , < 16.0.10417.20083 (custom)
Create a notification for this product.
Show details on NVD website

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