CVE-2026-69355HighCVSS 8.8
Microsoft Exchange Server Remote Code Execution Vulnerability
🔗 CVE IDs covered (1)
📋 Description
External control of file name or path in Microsoft Exchange Server allows an authorized attacker to execute code over a network.
🎯 Affected products4
- 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
✅ Remediation
KB5121609 (Security Update) — fixed build 15.02.1748.051 KB5121610 (Security Update) — fixed build 15.02.1544.046 KB5121611 (Security Update) — fixed build 15.01.2507.073 KB5121608 (Security Update) — fixed build 15.02.2562.049
🔗 References (6)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69355
- referencehttps://support.microsoft.com/help/5121609
- referencehttps://support.microsoft.com/help/5121610
- referencehttps://support.microsoft.com/help/5121611
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108825
- referencehttps://support.microsoft.com/help/5121608