CVE-2026-123383

HighCVSS 8.8/10Last modified Nov 10, 2026

Description

Heap-based buffer overflow in Microsoft Office Outlook 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

CWE-122

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Nov 10, 2026
Last modified
Nov 10, 2026
NVD status
Awaiting Analysis

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CVE-2026-123383: High severity, CVSS 8.8 | Vulnix