CVE-2026-45504

Analyzed Analyzed - Analysis Complete

Microsoft Exchange Server Server-Side Request Forgery Vulnerability

Publication date: 2026-06-09

Last updated on: 2026-06-15

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-09

Last Modified

2026-06-15

Generated

2026-06-30

AI Q&A

2026-06-09

EPSS Evaluated

2026-06-28

NVD

CVE-2026-45504

EUVD

EUVD-2026-35680

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2019
microsoft	exchange_server_subscription_edition	to 15.02.2562.043 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

This vulnerability is a server-side request forgery (SSRF) issue in Microsoft Exchange Server. It allows an authorized attacker to send crafted requests from the server, which can lead to elevated privileges over the network.

Impact Analysis

The vulnerability can impact you by allowing an attacker with some level of authorization to elevate their privileges, potentially gaining higher access rights than intended. This can lead to unauthorized access, data compromise, and disruption of services.

Compliance Impact

The vulnerability allows an authorized attacker to elevate privileges over a network in Microsoft Exchange Server, which could potentially lead to unauthorized access to sensitive data.

Such unauthorized access and privilege escalation may impact compliance with standards and regulations like GDPR and HIPAA, which require protection of personal and health information.

However, the provided information does not explicitly describe the direct effects on compliance with these regulations.

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