High severity8.8NVD Advisory· Published Jul 14, 2026· Updated Oct 14, 2026
CVE-2026-55005
CVE-2026-55005
Description
Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.
Affected products
5cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:*+ 3 more
- 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:*:*:*:*:*:*
- (no CPE)
- cpe:2.3:a:microsoft:exchange_server_subscription_edition:*:*:*:*:*:*:*:*Range: <15.02.2562.045
Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55005nvdVendor Advisory
News mentions
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