Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

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Office 2019 Subscribe
Office 2021 Subscribe
Office 2024 Subscribe
Outlook 2016 Subscribe
Advisories

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Fixes

Solution

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Workaround

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History

Tue, 11 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Title Microsoft Outlook Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft 365 Apps
Microsoft office 2019
Microsoft office 2021
Microsoft office 2024
Microsoft outlook 2016
Weaknesses CWE-190
CPEs cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:office_2019:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:*
cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:*
cpe:2.3:a:microsoft:outlook_2016:*:*:*:*:*:x86:*:*
Vendors & Products Microsoft
Microsoft 365 Apps
Microsoft office 2019
Microsoft office 2021
Microsoft office 2024
Microsoft outlook 2016
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-11T19:21:29.842Z

Reserved: 2026-08-04T00:01:20.934Z

Link: CVE-2026-70329

cve-icon Vulnrichment

Updated: 2026-08-11T19:21:24.207Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-08-11T17:19:10.777

Modified: 2026-08-11T20:18:43.697

Link: CVE-2026-70329

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses