CVE-2026-97758
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 with the user's permissions when a victim opens a maliciously crafted file. The attacker needs no privileges but must convince a user to open the document.
Root cause
A heap-based buffer overflow in Microsoft Office Excel's file parsing logic allows memory corruption during processing.
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 Office updates referenced in the MSRC advisory; as an interim measure, block untrusted Excel attachments at the email gateway or open untrusted spreadsheets exclusively within Microsoft Office Protected View or Application Guard.
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-2026-97758PatchVendor Advisory