Code Injection Vulnerability in Microsoft Exchange Server by Microsoft
CVE-2026-118149

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Exchange Server Subscription Edition Rtm
Vendor
CVE Published:
10 November 2026

What is CVE-2026-118149?

A vulnerability in Microsoft Exchange Server permits unauthorized code execution through improper control of code generation. Attackers with access may exploit this weakness to execute arbitrary code in the context of the affected server, posing a significant risk to sensitive data and network integrity. To mitigate this threat, it is crucial for organizations using Microsoft Exchange Server to apply the recommended patches and updates provided by Microsoft.

Affected Version(s)

Microsoft Exchange Server Subscription Edition RTM x64-based Systems 15.02.0.0 < 15.02.2562.057

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.