CVE-2026-83951HighCVSS 5.5
Microsoft Office Word Information Disclosure Vulnerability
🔗 CVE IDs covered (1)
📋 Description
Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
🎯 Affected products10
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft Office 2019 for 32-bit editions
- Microsoft Office 2019 for 64-bit editions
- Microsoft Office LTSC 2021 for 32-bit editions
- Microsoft Office LTSC 2021 for 64-bit editions
- Microsoft Office LTSC 2024 for 32-bit editions
- Microsoft Office LTSC 2024 for 64-bit editions
- Microsoft Word 2016 (32-bit edition)
- Microsoft Word 2016 (64-bit edition)
✅ Remediation
KB5002923 (Security Update) — fixed build 16.0.5569.1000 KBRelease Notes (Security Update) — fixed build 16.0.10417.20207 KBRelease Notes (Security Update) — fixed build 16.0.14334.20906 KBRelease Notes (Security Update) — fixed build 16.0.17932.20976 KBRelease Notes (Security Update) — fixed build 16.0.20326.20138
🔗 References (5)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83951
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108808
- referencehttps://support.microsoft.com/help/5002923
- referencehttps://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
- referencehttps://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates