Advisory severityHigh8.8Microsoft Server

High [CVE-2026-62913] Microsoft Exchange Server Remote Code Execution Vulnerability

This high-severity Microsoft Server advisory covers CVE-2026-62913 affecting Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2019 Cumulative Update 15.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-62913 Source published Aug 11, 2026Source updated Aug 11, 2026

VulniPulse record published Aug 11, 2026Record updated Aug 11, 2026

CVE-2026-62913

Affected products & platforms

Microsoft ServerExchange Server

Open source advisory

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Summary

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.

Affected versions

Microsoft Exchange Server 2016 Cumulative Update 23 15.01.0.0 before 15.01.2507.072
Microsoft Exchange Server 2019 Cumulative Update 14 15.02.0.0 before 15.02.1544.044
Microsoft Exchange Server 2019 Cumulative Update 15 15.02.0.0 before 15.02.1748.049
Microsoft Exchange Server Subscription Edition RTM 15.02.0.0 before 15.02.2562.046

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Fixed versions

KB5121576 (build 15.01.2507.072)
KB5121573 (build 15.02.2562.046)
KB5121574 (build 15.02.1748.049)
KB5121575 (build 15.02.1544.044)

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Install the applicable security update for your platform: KB5121576, KB5121573, KB5121574, KB5121575 (see the Microsoft Update Catalog).

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Microsoft Security Update Guide (MSRC)official
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://api.msrc.microsoft.com/cvrf/v3.0/updates; this link opens the Microsoft Server advisory index instead of the raw feed document.
Microsoft Server
Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Microsoft Server
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-62913NVD CVE.org MITRE

Official resources

Microsoft Update Catalog: KB5121576
Official documentation
Direct download of the KB5121576 security update named in the MSRC remediation data for this CVE.
Microsoft Update Catalog: KB5121573
Official documentation
Direct download of the KB5121573 security update named in the MSRC remediation data for this CVE.
Microsoft Update Catalog: KB5121574
Official documentation
Direct download of the KB5121574 security update named in the MSRC remediation data for this CVE.
MSRC Security Update Guide
Official documentation
Filter by this CVE for per-product KB numbers, severity and exploitability assessment.

Discussion(0)

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