Remote Crash Vulnerability in BACnet Stack for Embedded Systems
CVE-2026-47711

8.6HIGH

Key Information:

Vendor

Bacnet-stack

Status
Bacnet-stack
Vendor
CVE Published:
12 November 2026

What is CVE-2026-47711?

A vulnerability exists in the BACnet Stack, an open-source protocol stack used for embedded systems. Before versions 1.4.4, 1.5.1, and 1.6.0, a remote attacker could exploit this vulnerability by sending a valid Confirmed WriteProperty request to the current master demo server. This request could update loop-1's controlled-variable-reference to point to life-safety-zone-1 / accepted-modes, leading to a crash of the server. This issue poses a significant risk to systems utilizing this protocol stack, highlighting the importance of upgrading to the patched versions.

Affected Version(s)

bacnet-stack < 1.4.4 < 1.4.4

bacnet-stack < 1.5.1 < 1.5.1

bacnet-stack < 1.6.0 < 1.6.0

References

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

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.