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5.5Medium

CVE-2026-78506Microsoft Office Word Information Disclosure Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 2019; Microsoft Microsoft Office 365 for Mac; Microsoft Microsoft Office LTSC 2021 Published: (2 months ago)

Description

Improper null termination in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

Weakness (CWE): CWE-170

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
microsoft 365 apps 16.0.1 – < 16.0.20326.20138
microsoft microsoft 365 —
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 – < 16.0.20326.20138
Microsoft Microsoft Office 2019 19.0.0 – < 16.0.10417.20207
Microsoft Microsoft Office 365 for Mac 1.0.0 – < 16.113.26091433
Microsoft Microsoft Office LTSC 2021 16.0.1 – < 16.0.14334.20906
Microsoft Microsoft Office LTSC 2024 16.0.0 – < 16.0.17932.20976
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 – < 16.113.26091433
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 – < 16.113.26091433
Microsoft Microsoft Word 2016 16.0.1 – < 16.0.5569.1000
microsoft office 2019 19.0.0 – < 16.0.10417.20207
microsoft office 2021 16.0.1 – < 16.0.14334.20906
microsoft office 2024 16.0.0 – < 16.0.17932.20976
microsoft office 365 1.0.0 – < 16.113.26091433
microsoft office macos 2021 16.0.1 – < 16.113.26091433
microsoft office macos 2024 16.0.0 – < 16.113.26091433
microsoft word 2016
microsoft word 2016 16.0.1 – < 16.0.5569.1000

References and patches

CPE matches (NVD) (13)
  • cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
  • cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
  • cpe:2.3:a:microsoft:microsoft_365:-:*:*:*:*:macos:*:*
  • cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x64:*
  • cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x86:*
  • cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x64:*
  • cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x86:*
  • cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:macos:-:*
  • cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x64:*
  • cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x86:*
  • cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:macos:-:*
  • cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x64:*
  • cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:x86:*

Recent CVEs in the same product — Microsoft Office / 365 Apps

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Microsoft Office Excel Information Disclosure Vulnerability

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

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Microsoft Office Security Feature Bypass Vulnerability

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Product ui does not warn user of unsafe actions in Microsoft Office allows an unauthorized attacker to bypass a security feature over a network.