CVE-2026-45583

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Code Injection in Microsoft Exchange Server

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description

Improper control of generation of code ('code injection') in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-09

Last Modified

2026-06-09

Generated

2026-06-30

AI Q&A

2026-06-10

EPSS Evaluated

2026-06-28

NVD

CVE-2026-45583

EUVD

EUVD-2026-35681

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	exchange_server	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Compliance Impact

The vulnerability allows unauthorized remote code execution on Microsoft Exchange Server, which could lead to unauthorized access, data breaches, or manipulation of sensitive information.

Such unauthorized access and potential data compromise can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data.

However, specific details on compliance impact or mitigation related to these standards are not provided in the available resources.

Executive Summary

This vulnerability involves improper control of code generation, also known as 'code injection', in Microsoft Exchange Server. It allows an unauthorized attacker to execute code remotely over a network.

Impact Analysis

The vulnerability can lead to remote code execution by an unauthorized attacker, which means the attacker could run malicious code on the affected Microsoft Exchange Server. This can compromise the confidentiality, integrity, and availability of the system.

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