CVE-2026-45583: CWE-94: Improper Control of Generation of Code ('Code Injection') in Microsoft Microsoft Exchange Server 2016 Cumulative Update 23
Improper control of generation of code ('code injection') in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-94 (Improper Control of Generation of Code), affects Microsoft Exchange Server 2016 Cumulative Update 23 (version 15.01.0.0). It permits unauthorized remote code execution due to improper control over code generation. The CVSS v3.1 base score is 7.5, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation allows an attacker without privileges to execute arbitrary code remotely on the affected Microsoft Exchange Server, potentially leading to full compromise of the system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45583 to remediate this vulnerability.
CVE-2026-45583: CWE-94: Improper Control of Generation of Code ('Code Injection') in Microsoft Microsoft Exchange Server 2016 Cumulative Update 23
Description
Improper control of generation of code ('code injection') in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 7.5high
Affected software
Microsoft
Microsoft Exchange Server 2016 Cumulative Update 23
Microsoft
Microsoft Exchange Server 2019 Cumulative Update 14
Microsoft
Microsoft Exchange Server 2019 Cumulative Update 15
Microsoft
Microsoft Exchange Server Subscription Edition RTM
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-94 (Improper Control of Generation of Code), affects Microsoft Exchange Server 2016 Cumulative Update 23 (version 15.01.0.0). It permits unauthorized remote code execution due to improper control over code generation. The CVSS v3.1 base score is 7.5, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation allows an attacker without privileges to execute arbitrary code remotely on the affected Microsoft Exchange Server, potentially leading to full compromise of the system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45583 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T19:55:45.729Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45583","vendor":"Microsoft"}]
Threat ID: 6a284cdf8dd33fbd85664daf
Added to database: 06/09/2026, 17:26:55 UTC
Last enriched: 08/14/2026, 13:38:25 UTC
Last updated: 09/14/2026, 10:01:31 UTC
Views: 203
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