Risk Letters
About Sign in ENDA

Exploited vulnerability

CVE-2023-35311

TLP:CLEAR

Microsoft Outlook Security Feature Bypass Vulnerability

Microsoft Outlook contains a security feature bypass vulnerability that allows an attacker to bypass the Microsoft Outlook Security Notice prompt.

Facts

  • Vendor: Microsoft
  • Product: Outlook
  • CVSS: 8.8
  • EPSS (probability of exploitation within 30 days): 15.5 %
  • On CISA's Known Exploited Vulnerabilities list since: 11 July 2023
  • First known exploitation: 11 July 2023
  • CISA's deadline for US federal agencies: 1 August 2023
  • Weakness: CWE-367
  • First seen by Risk Letters: 11 July 2023

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD

© The Risk Letters 2026 · Privacy policy · Terms of sale · Refund policy