CVE-2026-97009
7.8HighPublished 13 Oct 2026 · NVD status: Analyzed · AI triage by gemini-3.8-flash
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Impact
- Full C/I/A compromise
- Weakness
- CWE-122
Impact
Attackers can execute arbitrary code with the privileges of the local user if they trick the user into opening a malicious Excel file. Exploitation requires user interaction to open the file locally.
Root cause
A heap-based buffer overflow flaw exists in Microsoft Excel when parsing crafted spreadsheet files.
Affected systems
Versions not listed — check the vendor advisory.
CVSS v3.1 · CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Fix & remediation
Install the security update from Microsoft for Microsoft Office Excel as detailed in the vendor advisory; until patched, avoid opening untrusted or unsolicited Excel files.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.