CVE-2026-88196: Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.
Other sources
Microsoft Office Remote Code Execution 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 16.0.14334.20974 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.21056
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The attacker does not need prior privileges and can attack over the network, but user interaction is required. The provided data does not specify the form of interaction needed.
Which Office deployments are in scope?
Affected products include Microsoft 365 Apps for Enterprise, Microsoft Office 365 for Mac, Office LTSC 2021 for 32-bit and 64-bit editions and for Mac, and Office LTSC 2024 for 32-bit and 64-bit editions and for Mac.
What could successful exploitation allow?
Successful exploitation can allow code execution. The reported impact includes high confidentiality, integrity, and availability consequences.