CVE-2018-8581CISA KEV

Microsoft Exchange Server Privilege Escalation Vulnerability

Severity unknownCVSS unknownCheck the vendor advisory for fixed versions

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA KEV Check MSRC

CISA catalog record

A privilege escalation vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could attempt to impersonate any other user of the Exchange server.

Product: Exchange Server
Added to KEV: 3 Mar 2022
Federal remediation due: 17 Mar 2022
Known ransomware use: Yes

Page history

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Field-level log (2)

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23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete

Explore global source statements, affected packages and advisory history for CVE-2018-8581. The catalog has a separate collection scope from Microsoft release records.

More advisories, affected versions and source history

cve-program · CVE-2018-8581

Published

Microsoft Exchange Server

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Microsoft Exchange Server",
                    "vendor": "Microsoft",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "2010"
                        },
                        {
                            "status": "affected",
                            "version": "2013"
                        },
                        {
                            "status": "affected",
                            "version": "2016"
                        },
                        {
                            "status": "affected",
                            "version": "2019"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON