PT-2026-47975 · Microsoft · Exchange Server

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-45503

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Microsoft Exchange Server (affected versions not specified)

Description An improper authorization issue leads to Server-side Request Forgery (SSRF), a flaw where a server is tricked into making unintended requests to an internal or external resource. This allows an authorized attacker to disclose information over a network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Authorization

Weakness Enumeration

CWE-285

Related Identifiers

CVE-2026-45503

Affected Products

Exchange Server

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45503 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-45503 · Security Note