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Critical severity9.3NVD Advisory· Published Sep 8, 2026· Updated Sep 30, 2026

CVE-2026-69356

CVE-2026-69356

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 products

5
  • Microsoft/Exchange Serverllm-fuzzy4 versions
    (expand)+ 3 more
    • (no CPE)
    • cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:*
    • cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:*:*:*:*:*:*
    • cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:*:*:*:*:*:*
  • Microsoft/Exchange Server Subscription Edition
    cpe:2.3:a:microsoft:exchange_server_subscription_edition:*:*:*:*:*:*:*:*
    Range: <15.02.2562.049

Patches

Vulnerability mechanics

References

1

News mentions

2