CVE-2026-69356HighCVSS 9.3
Microsoft Exchange Server Spoofing Vulnerability
🔗 CVE IDs covered (1)
📋 Description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing 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
KB5121610 (Security Update) — fixed build 15.02.1544.046 KB5121609 (Security Update) — fixed build 15.02.1748.051 KB5121608 (Security Update) — fixed build 15.02.2562.049 KB5121611 (Security Update) — fixed build 15.01.2507.073
🔗 References (6)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69356
- referencehttps://support.microsoft.com/help/5121610
- referencehttps://support.microsoft.com/help/5121609
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108825
- referencehttps://support.microsoft.com/help/5121608
- referencehttps://support.microsoft.com/help/5121611