CVE-2026-65801
Critical
Description
Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges over a network.
SeverityCritical
CVSS10.0
Exploit probability—
Product
Microsoft Exchange Online
PublishedAug 20, 2026
First seenAug 20, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft exchange_online | No range specified | — |
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