CVE-2018-8581Microsoft Exchange Server Privilege Escalation Vulnerability

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

7.4 HIGHEPSS 27.55%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 02:05 UTC

OverviewCVSS details

7.4HIGHCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Nov 14, 2018
Assigner: microsoft

Affected

Microsoft Exchange Server (Microsoft)

Versions: 2010 · 2013

All affected versions →

Exploitation

Public exploit: None listed
CISA KEV: Listed · Mar 3, 2022
KEV due date: Mar 17, 2022
Ransomware use: Known
SSVC: Exploitation active · Automatable no · Impact total

EPSS · FIRST, scored Nov 7

27.55%chance of exploitation in 30 days

Higher than 98.08% of CVEs

CVSS 3.1 · NVD

7.4High

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

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: None

CVSS 2.0 · NVD

5.8Medium

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

Attack vector: Network
Attack complexity: Medium
Authentication: None
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: None

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
7.4	HIGH	3.1NVD	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
5.8	MEDIUM	2.0NVD	AV:N/AC:M/Au:N/C:P/I:P/A:N

CISA required action

⚡ Known exploited · remediation due Mar 17, 2022

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Details

CVE ID: CVE-2018-8581
Status: Analyzed
Assigner (CNA): microsoft
Published: Nov 14, 2018
Last modified: 2026-06-17 02:05 UTC

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 12:17 UTC.