CVE-2026-49341
BACnet Stack: Uncontrolled recursion in Timer object writeback path leads to remote server stack overflow
BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to version 1.5.1, there is a remotely reachable denial-of-service vulnerability in bacnet-stack affecting the default demo server built from the unmodified apps/server/main.c. This issue has been patched in version 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 |
< 1.5.1 (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 |
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-7r8r-2rj2-5wvrCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/bacnet-stack/bacnet-stack/pull/1347CNA: GitHub_M · x_refsource_MISC
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