CVE-2026-80079: Microsoft Office Word Information Disclosure Vulnerability
Microsoft Office Word Information Disclosure Vulnerability
Other sources
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5569.1000Patch KB5002923 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20207 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.20960 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.20326.20138 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20896
Event History
Frequently Asked Questions
Which Office deployments are identified as affected?
The affected software list includes Microsoft Word 2016; Microsoft 365 Apps for Enterprise; Office 2019 in both 32-bit and 64-bit editions; Office LTSC 2021 in both 32-bit and 64-bit editions; and Office LTSC 2024 in both 32-bit and 64-bit editions.
Does exploitation require an authenticated account or elevated privileges?
No. The vector indicates network exposure and no privileges are required, although user interaction is required.
What is the expected security impact?
The vulnerability can disclose information through an out-of-bounds read in Word. The provided impact metrics indicate high confidentiality impact, with no integrity or availability impact.