CVE-2023-35311
Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2021, Microsoft Office 2019
Published 11 Jul 2023 · updated 17 Jun 2026 · Analyzed
8.8 High · CVSS 3.1, microsoft.com
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 11 Jul 2023, with a remediation deadline of 1 Aug 2023 for US federal agencies.
Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Description
Microsoft Outlook Security Feature Bypass Vulnerability
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35311 · Patch, Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311 · US Government Resource