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CVE-2018-8581

HighPublished

Microsoft Exchange Server Privilege Escalation Vulnerability

Published: Nov 14, 2018
Updated: Oct 21, 2025
Assigning CNA: microsoft
Evidence observed: Mar 3, 2022

Primary CVSS

7.4/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

27.4%

Moderate · next 30 days

Percentile: 98.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

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

Sources

CVE-2018-8581Exploit
CVE-2018-8581 | Microsoft Exchange Server Elevation of Privilege Vulnerability
CVE-2018-8581Exploit
CVE-2018-8581
Exchange2domainExploit
CVE-2018-8581

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