AI description
Automated description summarized from trusted sources.
CVE-2026-70329 is a vulnerability identified as an integer overflow or wraparound issue within Microsoft Office Outlook. This flaw enables an unauthorized attacker to execute code over a network. Exploitation of this vulnerability typically requires user interaction, such as opening a specially crafted malicious attachment. Microsoft addressed this issue as part of its August 2026 Patch Tuesday updates, affecting various versions including Microsoft 365 Apps for Enterprise, Microsoft Office 2019, Microsoft Office LTSC 2021, LTSC 2024, and standalone Microsoft Outlook 2016.
- Description
- Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
- Source
- secure@microsoft.com
- NVD status
- Analyzed
- Products
- 365_apps, office_2019, office_2021, office_2024, outlook
CVSS 3.1
- Type
- Secondary
- Base score
- 8.8
- Impact score
- 5.9
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Severity
- HIGH
- secure@microsoft.com
- CWE-190
- Hype score
- Not currently trending
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