CVE-2026-72974: Microsoft Office Excel Information Disclosure Vulnerability
Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Other sources
Microsoft Office Excel Information Disclosure Vulnerability
— 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 KB5002916 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20906 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.20976 - 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 16.0.20326.20138
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The attacker can be unauthorized and does not need prior privileges, but exploitation requires user interaction. The attack vector is network-based and has low attack complexity.
Which Office deployments are listed as affected?
The affected software list includes Microsoft Office 2016, Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021, and Office LTSC 2024. For Office 2019 and both LTSC releases, both 32-bit and 64-bit editions are listed.
What is the expected security impact?
Successful exploitation can disclose information. The supplied severity vector indicates high confidentiality impact, with no integrity or availability impact.