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OpenAdvisories

Product · Microsoft

Microsoft Exchange Online

7 known vulnerabilities.

Microsoft Exchange Online at a glance

Last 12 months
7
Critical · all time
5
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
0 1 2 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 1 vulnerability, 1 critical Mar April 2026: 0 vulnerabilities May 2026: 0 vulnerabilities June 2026: 2 vulnerabilities, 2 critical Jun July 2026: 2 vulnerabilities, 1 critical August 2026: 1 vulnerability, 1 critical September 2026: 0 vulnerabilities Sep October 2026: 1 vulnerability November 2026: 0 vulnerabilities
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7 results · Feed

  • High 7.5

    Microsoft Exchange Online Remote Code Execution Vulnerability

    Stack-based buffer overflow in Microsoft Exchange Online allows an authorized attacker to execute code over a network.

  • Critical 10.0

    Microsoft Exchange Online Elevation of Privilege Vulnerability

    Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges over a network.

  • Critical 10.0

    Microsoft Exchange Online Tampering Vulnerability

    Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network.

  • High 8.8

    Microsoft Exchange Online Elevation of Privilege Vulnerability

    Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

  • Critical 9.6

    Microsoft Exchange Online Elevation of Privilege Vulnerability

    Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

  • Critical 9.1

    Microsoft Exchange Online Information Disclosure Vulnerability

    Improper authorization in Microsoft Exchange Online allows an unauthorized attacker to disclose information over a network.

  • Critical 9.9

    Microsoft Exchange Elevation of Privilege Vulnerability

    Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.