Microsoft Outlook Vulnerability Allows Attackers to Execute Malicious Code Remotely

Cybersecuritynews •Guru Baran • August 12, 2026

Microsoft has disclosed a new remote code execution flaw in Outlook, tracked as CVE-2026-70329, as part of its August 2026 Patch Tuesday rollout. The vulnerability stems from an integer overflow or wraparound weakness in Microsoft Office Outlook, and it carries a CVSS v3.1 base score of 8.8, placing it in the High severity band. Microsoft’s […]

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Microsoft Outlook RCE Vulnerability CVE-2026-70329 Disclosed Microsoft has disclosed a remote code execution (RCE) vulnerability in Outlook, tracked as CVE-2026-70329. This flaw, identified as stemming from an integer overflow issue, allows attackers to execute malicious code on affected systems. Rated as Important, it has a CVSS 3.1 score of 8.8, indicating a high severity level. The vulnerability was published on August 11, 2026, as part of Microsoft's Patch Tuesday rollout. Users of Microsoft Office Outlook are urged to apply the necessary patches to mitigate potential exploitation. The scope of impact includes all versions of Outlook that are vulnerable to this flaw. No active exploitation has been reported at this time, but the potential for serious consequences remains. 4 sources 65

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Microsoft Outlook Vulnerability Allows Attackers to Execute Malicious Code Remotely

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Extracted Entities

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