CVE-2026-45341
BACnet Stack: NULL pointer dereference in bacnet_device_object_reference_decode() when WriteProperty updates Structured View subordinate-list
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| bacnet-stack bacnet-stack |
>= 1.4.0, < 1.4.4 (affected) >= 1.5.0, < 1.5.1 (affected) |
CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA: GitHub_M |
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD: [email protected] |
Exploit evidence
- https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-fv2r-c2m2-7qhh
exploit · ADP: CISA-ADP
References
- https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-fv2r-c2m2-7qhhCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-fv2r-c2m2-7qhhADP: CISA-ADP · exploit
- https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-fv2r-c2m2-7qhh[email protected]
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