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.

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Related advisories and sources

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CVE-2018-8581 · CVE overview and exploitation status

cve-program · CVE-2018-8581

Related changes

Linked by CVE identifier

Microsoft Exchange Server Privilege Escalation Vulnerability · CISA KEV deadline · 17 Mar 2022
Microsoft Exchange Server Privilege Escalation Vulnerability · Added to CISA KEV · 3 Mar 2022