CVE-2026-52790
BACnet Stack: bacnet_device.c stack-use-after-return in writable Device string properties
BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.5, 1.5.1, and 1.6.0, there is a library-level memory safety issue that is reachable from an unmodified official sample server (apps/server-basic/main.c) over BACnet/IP resulting in a stack-use-after-return in writable Device string properties. This issue has been patched in versions 1.4.5, 1.5.1, and 1.6.0.
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 |
< 1.4.5 (affected) < 1.5.1 (affected) < 1.6.0 (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 |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-jr7p-rm2x-739xCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/bacnet-stack/bacnet-stack/pull/1375CNA: GitHub_M · x_refsource_MISC
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