Remote Code Execution Vulnerability in Microsoft Exchange Server
CVE-2026-118207

8.8HIGH

Key Information:

Vendor

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

What is CVE-2026-118207?

An improper input validation vulnerability in Microsoft Exchange Server could allow an authorized attacker to execute arbitrary code through network requests. This issue potentially leads to unauthorized access to system resources and sensitive data if exploited. It is imperative for administrators to implement the necessary patches and security measures to safeguard their systems against this vulnerability.

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

.