CVE-2026-97740: Microsoft Office Excel Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere 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 16.0.17932.21056 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20228Patch KB5002928 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20974 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The attacker can be unauthorized and attack over a network, but user interaction is required. The available data does not specify the exact user action or delivery method.
Which Office deployments are identified as affected?
The listed products are Microsoft 365 Apps for Enterprise; Office LTSC 2021 and 2024 for 32-bit editions; Office LTSC 2024 for 64-bit editions; Office Online Server; Office 365 for Mac; and Office LTSC for Mac 2021 and 2024.
What is the expected impact if exploitation succeeds?
Successful exploitation may disclose sensitive system information. The provided severity vector indicates high confidentiality impact, with no integrity or availability impact.