CVE-2026-118154

Microsoft Exchange Server Elevation of Privilege Vulnerability

Published Nov 10, 2026 CVSS 3.1 · 8.8 High EPSS 1.0% KEV · Not listed
Description
Reliance on untrusted inputs in a security decision in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Microsoft microsoft Exchange Server Subscription Edition Rtm
Vendors & Products Microsoft microsoft Exchange Server Subscription Edition Rtm
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Reliance on untrusted inputs in a security decision in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Title Microsoft Exchange Server Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft exchange Server Se
Weaknesses CWE-807
CPEs cpe:2.3:a:microsoft:exchange_server_se:*:RTM:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft exchange Server Se
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 12, 2026, 9:48 PM
Reserved
Oct 27, 2026, 5:35 PM
Status
Awaiting Analysis
Published
Nov 10, 2026, 7:19 PM
Modified
Nov 10, 2026, 8:18 PM