Microsoft Outlook

6 known vulnerabilities in Microsoft Outlook, 1 critical, 3 actively exploited, with patch priority, exploit likelihood and the news covering them.

Recently exploited

  • CVE-2023-35311 CVSS 8.8 high · actively exploited Microsoft Outlook Security Feature Bypass Vulnerability
  • CVE-2023-23397 CVSS 9.8 critical · actively exploited Microsoft Office Outlook Privilege Escalation Vulnerability
  • CVE-2017-11774 CVSS 7.8 high · actively exploited Microsoft Office Outlook Security Feature Bypass Vulnerability

Latest vulnerabilities

  • CVE-2026-80073 CVSS 6.5 medium Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.
  • CVE-2026-78519 CVSS 8.8 high Use of uninitialized resource in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
  • CVE-2026-69629 CVSS 8.8 high Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
  • CVE-2023-35311 CVSS 8.8 high · actively exploited Microsoft Outlook Security Feature Bypass Vulnerability
  • CVE-2023-23397 CVSS 9.8 critical · actively exploited Microsoft Office Outlook Privilege Escalation Vulnerability
  • CVE-2017-11774 CVSS 7.8 high · actively exploited Microsoft Office Outlook Security Feature Bypass Vulnerability