Microsoft Server Exchange Server Vulnerabilities & Security Advisories
10 advisories tracked · Microsoft Security Update Guide (MSRC) · 0 listed in the CISA Known Exploited Vulnerabilities catalog
Every row below is a published Microsoft Server advisory that VulniPulse classified as Exchange Server, with the CVEs, affected and fixed releases and exploitation status the vendor stated. Severity mix: 1 critical, 7 high, 3 medium.
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Source
Microsoft Security Update Guide (MSRC)
Polled via the official MSRC Security Update Guide RSS feed (api.msrc.microsoft.com, no credentials required), scoped to SERVER products only — Windows Server, Exchange, SQL Server, SharePoint, Hyper-V and companion server roles. Client-only CVEs (Edge, Office apps, consumer Windows) are filtered out via the monthly CVRF document's affected-product list.
Latest MS Server Exchange Server advisories
Critical [CVE-2026-55008] Microsoft Exchange Server Spoofing Vulnerability
Microsoft Exchange Server Spoofing Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server Subscription Edition RTM.
High [CVE-2026-55009] Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server Subscription Edition RTM; Microsoft Exchange Server 2019 Cumulative Update 15.
High [CVE-2026-55006] Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server Subscription Edition RTM.
High [CVE-2026-55005] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server Subscription Edition RTM; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server 2019 Cumulative Update 14.
High [CVE-2026-45503] Microsoft Exchange Server Information Disclosure Vulnerability
Microsoft Exchange Server Information Disclosure Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server Subscription Edition RTM; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server 2019 Cumulative Update 14.
High [CVE-2026-45504] Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability Affected products named by the advisory: Microsoft Exchange Server Subscription Edition RTM; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 14.
High [CVE-2026-45583] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server Subscription Edition RTM.
Medium [CVE-2026-45500] Microsoft Exchange Server Spoofing Vulnerability
Microsoft Exchange Server Spoofing Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server Subscription Edition RTM; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server 2016 Cumulative Update 23.
Medium [CVE-2026-45501] Microsoft Exchange Server Spoofing Vulnerability
Microsoft Exchange Server Spoofing Vulnerability Affected products named by the advisory: Microsoft Exchange Server Subscription Edition RTM; Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server 2019 Cumulative Update 14.
Medium [CVE-2026-45502] Microsoft Exchange Server Information Disclosure Vulnerability
Microsoft Exchange Server Information Disclosure Vulnerability Affected products named by the advisory: Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Exchange Server Subscription Edition RTM.