CVE-2026-97765
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-122
Impact
Remote attackers can execute arbitrary code on the target system with the logged-in user's privileges. Exploitation requires convincing a user to open a crafted Excel file.
Root cause
A heap-based buffer overflow in Microsoft Office Excel mishandles file parsing and corrupts memory.
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 patch from Microsoft MSRC advisory CVE-2026-97765 immediately. If patching must wait, block untrusted Excel attachments at the email gateway and avoid opening unexpected spreadsheets.
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 over a network.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97765PatchVendor Advisory