CVE-2026-45583 Details
Description
Improper control of generation of code ('code injection') in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
A code injection vulnerability has been identified in Microsoft Exchange Server, allowing unauthorized attackers to execute code remotely. This issue arises from improper control over code generation, which can be exploited by intercepting network traffic and injecting malicious data. The vulnerability is present in multiple versions of Exchange Server, including the Subscription Edition RTM, Exchange Server 2019 Cumulative Updates 14 and 15, and Exchange Server 2016 Cumulative Update 23.
Users are advised to download and install the latest security updates for their version of Microsoft Exchange Server. The June 2026 security updates include the necessary patches. Additionally, Microsoft recommends downloading the latest version of the Public Folder scripts, as the versions included with Exchange Server are outdated and will be removed in a future update.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 10, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45583 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft exchange server | 2016 cumulative_update_23 2019 cumulative_update_14 2019 cumulative_update_15 |
CPE
Remediation
| |
| microsoft exchange server subscription edition | < 15.02.2562.043 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 28, 2026 | CVE Modified | [email protected] |
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 9, 2026 | New CVE Received | [email protected] |