Known vulnerabilities in Microsoft Exchange Online
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CVE list
| CVE | Summary | Score | Published |
|---|---|---|---|
| CVE-2026-65801 | Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges… | 10.0 Critical | Aug 20, 2026 |
| CVE-2026-56191 | Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network | 10.0 Critical | Jul 24, 2026 |
| CVE-2026-48582 | Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network | 9.6 Critical | Jun 19, 2026 |
| CVE-2026-48579 | Improper authorization in Microsoft Exchange Online allows an unauthorized attacker to disclose information over a… | 9.1 Critical | Jun 4, 2026 |
| CVE-2026-26137 | Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a… | 9.9 Critical | Mar 19, 2026 |
Other Microsoft products
Windows Server 2019 5745
Windows Server 2019 (Server Core installation) 5648
Windows 10 Version 1809 5349
Windows Server 2022 5112
Windows Server 2016 5051
Windows Server 2016 (Server Core installation) 4847
Windows 10 Version 21H2 4539
Windows 10 Version 1607 4535
Windows Server 2012 R2 4103
Windows 10 Version 22H2 4041
Windows Server 2012 R2 (Server Core installation) 3958
Windows Server 2012 3865