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Description

Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.

PUBLISHED Reserved 2026-05-12 | Published 2026-06-09 | Updated 2026-06-10 | Assigner microsoft




HIGH: 8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C

Problem types

CWE-285: Improper Authorization

Product status

15.01.0.0 (custom) before 15.01.2507.069
affected

15.02.0.0 (custom) before 15.02.1544.041
affected

15.02.0.0 (custom) before 15.02.1748.046
affected

15.02.0.0 (custom) before 15.02.2562.043
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45503 (Microsoft Exchange Server Information Disclosure Vulnerability) vendor-advisory patch

cve.org (CVE-2026-45503)

nvd.nist.gov (CVE-2026-45503)

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