CVE-2026-45341 · Package
NO FIX YET · SEE WHAT TO DO
BACnet Stack is an open source BACnet protocol C library used in embedded building-automation devices. A crafted WriteProperty request that updates a structured view's subordinate list triggers a NULL pointer dereference, which can crash the device.
first public Jul 5, 2026 · 1 source
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Teams that build firmware or gateways on the BACnet Stack C library and expose BACnet WriteProperty to a network. The flaw is in the device object reference decode path, reached when a WriteProperty request updates a structured view's subordinate list. Devices that do not implement structured view objects or do not accept writes from untrusted networks are less exposed.
Not affected if no-structured-view-objects, writes-restricted-to-trusted-network
Who cares bacnet, building-automation, c, embedded
Unknown from the sources.
1.4.4 for the 1.4 line1.5.1 for the 1.5 lineBACnet Stack is a BACnet open source protocol stack C library for embedded systems. From versions 1.4.0 to before 1.4.4, and 1.5.0 to before 1.5.1, a NULL pointer dereference can be triggered in bacnet_device_object_reference_decode() when a WriteProperty request updates OBJECT_STRUCTURED_VIEW / PROP_SUBORDINATE_LIST. This issue has been patched in versions 1.4.4 and 1.5.1.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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