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CVE-2026-118299

HighCVSS 8.8/10Last modified Nov 13, 2026

Description

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published: Nov 10, 2026
Last modified: Nov 13, 2026
NVD status: Analyzed

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CVE-2026-118299: High severity, CVSS 8.8 | Vulnix