CVE-2026-45504

HighCVSS 8.8/10Last modified Jul 28, 2026

Description

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

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-918

Affected software

VendorProductVersions
MicrosoftMicrosoft Exchange Server 2016 Cumulative Update 23>= 15.01.0.0, < 15.01.2507.071
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 14>= 15.02.0.0, < 15.02.1544.043
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 15>= 15.02.0.0, < 15.02.1748.048
MicrosoftMicrosoft Exchange Server Subscription Edition RTM>= 15.02.0.0, < 15.02.2562.045

References

Timeline

Published
Jun 9, 2026
Last modified
Jul 28, 2026
NVD status
Analyzed

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CVE-2026-45504: High severity, CVSS 8.8 | Vulnix