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CVE-2018-8581

7.4
HIGHCVSS v3.1 Base Score
91.76%
HIGH RiskEPSS (100th percentile)
KEV
NVD-CWE-noinfo

An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka "Microsoft Exchange Server Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.

Published: 11/14/2018
Modified: 10/28/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Microsoft Exchange Server Privilege Escalation Vulnerability

Vendor / Product:

Microsoft Exchange Server

Required Action:

Apply updates per vendor instructions.

Due Date: 3/17/2022(OVERDUE)
Ransomware Campaign Use
Added to KEV:

3/3/2022

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2018-8581

Vulnerability Summary

CVSS v3 Score

7.4HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v2 Score

5.8

AV:N/AC:M/Au:N/C:P/I:P/A:N

EPSS Score (Exploitation Probability)

91.76%HIGH Exploitation Risk
100th percentile

This vulnerability has a 91.76% probability of being exploited in the next 30 days, ranking higher than 100% of all scored CVEs.

CWE Classification

NVD-CWE-noinfo

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