Nov 2026: Microsoft Exchange Server Elevation of Privilege Vulnerability
CVE-2026-118154 Published on November 10, 2026

Microsoft Exchange Server Elevation of Privilege Vulnerability
Reliance on untrusted inputs in a security decision in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Vendor Advisory NVD

Vulnerability Analysis

Exploitation:
NONE
Automatable:
NO
Technical Impact:
TOTAL

Weakness Type

Reliance on Untrusted Inputs in a Security Decision

The application uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.


Products Associated with CVE-2026-118154

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Microsoft Exchange Server Se

Affected Versions

Microsoft Exchange Server Subscription Edition RTM:

Exploit Probability

EPSS
1.04%
Percentile
64.29%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.