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Microsoft Exchange Online vulnerabilities
5 known CVE vulnerabilities in Microsoft Exchange Online, translated and rated.
- CVE-2026-65801Critical
Server-side request forgery (SSRF) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-56191Critical
Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network.
- CVE-2026-48582Critical
Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
- CVE-2026-48579Critical
Improper authorization in Microsoft Exchange Online allows an unauthorized attacker to disclose information over a network.
- CVE-2026-54998High
A vulnerability in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network due to incorrect authorization.