High severity7.5NVD Advisory· Published Nov 12, 2026· Updated Nov 12, 2026

CVE-2026-45341

Description

BACnet 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.

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Affected products

Bacnetstack/Bacnet Stackllm-fuzzy
Range: 1.4.0 to <1.4.4, 1.5.0 to <1.5.1

Patches

Vulnerability mechanics

References

github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-fv2r-c2m2-7qhhnvd

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cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000