CVE-2026-118157: Microsoft Exchange Server Elevation of Privilege Vulnerability
Published Nov 10, 2026
·Updated
Microsoft Exchange Server Elevation of Privilege Vulnerability
Other sources
Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
— Microsoft
Affected Software
1 affected componentFixes available
Microsoft Exchange Server Subscription Edition RTM<15.02.2562.057
15.02.2562.057
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.02.2562.057Patch KB5133453
Event History
Nov 10, 2026
CVE Published
via Microsoft·04:00 PM
Data Sourced
via Microsoft·04:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·04:00 PM
Affected Software
CVE Published
via MITRE·06:21 PM
Data Sourced
via MITRE·06:21 PM
DescriptionSeverity
Data Sourced
via NVD·07:19 PM
DescriptionSeverityWeakness