CVE-2026-97755
8.8HighPublished 13 Oct 2026 · NVD status: Analyzed · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Impact
- Full C/I/A compromise
- Weakness
- CWE-125
Impact
Remote attackers can execute arbitrary code in the context of the current user. To trigger it, an attacker must convince a user to open a malicious Excel spreadsheet.
Root cause
An out-of-bounds read vulnerability exists in Microsoft Office Excel during document parsing.
Affected systems
Versions not listed — check the vendor advisory.
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Fix & remediation
Install the security update referenced in the Microsoft MSRC advisory (CVE-2026-97755) via Microsoft Update or your endpoint patch management system. As a temporary mitigation, block untrusted Excel attachments at the email gateway and avoid opening untrusted workbooks.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97755PatchVendor Advisory