CVE-2026-97767
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-415, CWE-476
Impact
Remote attackers can execute arbitrary code on the victim's system, but they need a user to open a malicious Excel file. This compromises user-level privileges over the network.
Root cause
A double-free condition in Microsoft Office Excel's memory handling leads to memory corruption when parsing malformed files.
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
Apply the official security update from the vendor advisory via Microsoft Update or your endpoint management system. As an interim workaround, 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
Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97767PatchVendor Advisory