Jun 2026: Microsoft Exchange Server Information Disclosure Vulnerability
CVE-2026-45503 Published on June 9, 2026
Microsoft Exchange Server Information Disclosure Vulnerability
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-45503 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-45503
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Affected Versions
Microsoft Exchange Server 2016 Cumulative Update 23:- Version 15.01.0.0 and below 15.01.2507.069 is affected.
- Version 15.02.0.0 and below 15.02.1544.041 is affected.
- Version 15.02.0.0 and below 15.02.1748.046 is affected.
- Version 15.02.0.0 and below 15.02.2562.043 is affected.