Unauthenticated privilege elevation via server-side request forgery
Published Aug 20, 2026 · Updated Aug 29, 2026
Unauthenticated SSRF in Microsoft Exchange Online allows remote attackers to elevate privileges through a network request. Microsoft has not published the affected endpoint or explained how attacker-controlled input directs the service to an unintended destination. No authentication or user interaction is required; the disclosed consequence is privilege elevation, while the exact privileges and reachable resources remain unspecified.
Summary
What happened
Unauthenticated SSRF in Microsoft Exchange Online allows remote attackers to elevate privileges through a network request. Microsoft has not published the affected endpoint or explained how attacker-controlled input directs the service to an unintended destination. No authentication or user interaction is required; the disclosed consequence is privilege elevation, while the exact privileges and reachable resources remain unspecified.
The record
- CVE
- CVE-2026-65801
- Published
- Aug 20, 2026
- Updated
- Aug 29, 2026
- Vendor
- Microsoft
- Product
- Microsoft Exchange Online
- Classifications
- CWE-918, CAPEC-664, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 20, 2026CVE publishedPublication date reported by the CVE source.
- Aug 29, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=-
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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