CVE-2026-97748
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
Attackers can execute arbitrary code on the victim's machine. They need a user to open a malicious Excel spreadsheet over the network.
Root cause
A heap-based buffer overflow flaw in Microsoft Office Excel's file parsing logic.
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 latest Microsoft security update from the MSRC advisory link. As an interim workaround, block incoming untrusted Excel attachments at the email gateway and avoid opening untrusted 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-2026-97748PatchVendor Advisory