Out-of-Bounds Read Vulnerability in Microsoft Office Word
CVE-2026-20944

8.4HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft 365 Apps For Enterprise
Microsoft Office Ltsc For Mac 2021
Microsoft Office Ltsc For Mac 2024
Vendor
CVE Published:
13 January 2026

What is CVE-2026-20944?

An out-of-bounds read vulnerability in Microsoft Office Word enables unauthorized attackers to exploit the system, potentially leading to the local execution of malicious code. This weakness could be leveraged to compromise the integrity of sensitive data or disrupt operations. Users are urged to apply the latest security patches to mitigate risks associated with this vulnerability.

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Deploy the Patch

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office LTSC for Mac 2021 16.0.1 < 16.105.26011018

Microsoft Office LTSC for Mac 2024 16.0.0 < 16.105.26011018

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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