CVE-2023-35311

Microsoft Outlook Security Feature Bypass Vulnerability

State: Published
Severity: 8.8 High
Published: Jul 11, 2023
Updated: Oct 7, 2026
Reserved: Jun 14, 2023

Description

Microsoft Outlook Security Feature Bypass Vulnerability

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C	microsoft

Weaknesses

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

Affected Products

Product	Versions
Microsoft 365 Apps for EnterpriseMicrosoft	16.0.1 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office LTSC 2021Microsoft	16.0.1 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office 2019Microsoft	19.0.0 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Outlook 2016Microsoft	16.0.0.0 to before 16.0.5404.1000Affected
Microsoft Outlook 2013Microsoft	14.0.0 to before 15.0.5571.1000Affected
Microsoft Outlook 2013 Service Pack 1Microsoft	15.0.0.0 to before 15.0.5571.1000Affected

References

Microsoft Outlook Security Feature Bypass Vulnerabilityvendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311government-resource

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