Remote Code Execution in BACnet Stack by Vulnerability in Embedded Systems
CVE-2026-47217

7.5HIGH

Key Information:

Vendor

Bacnet-stack

Status
Bacnet-stack
Vendor
CVE Published:
12 November 2026

What is CVE-2026-47217?

The BACnet Stack is a widely used open-source protocol stack library for embedded systems, particularly in building automation. A specific vulnerability exists that allows remote attackers to exploit an uncontrolled recursion and subsequent stack overflow in the default server application of the BACnet Stack. This vulnerability is triggered through manipulation of the Channel object. Users should upgrade to BACnet Stack versions 1.4.4 or 1.5.1 or later to mitigate the risk associated with this issue, as patches addressing the vulnerability have been released.

Affected Version(s)

bacnet-stack < 1.4.4 < 1.4.4

bacnet-stack < 1.5.1 < 1.5.1

References

https://github.com/bacnet-stack/bacnet-stack/security/adv...
x_refsource_CONFIRM
https://github.com/bacnet-stack/bacnet-stack/pull/1345
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.