Denial of Service Vulnerability in BACnet Stack by BACnet
CVE-2026-62974

8.7HIGH

Key Information:

Vendor

Bacnet-stack

Status
Bacnet-stack
Vendor
CVE Published:
13 November 2026

What is CVE-2026-62974?

BACnet Stack, an open source protocol library for embedded systems, contains a vulnerability that allows a malformed BACnet WriteProperty request to cause the server demo to enter a non-terminating request-processing loop. This leads to uncontrolled resource consumption and results in a denial of service situation, without requiring any authentication. Users are advised to upgrade to versions 1.4.5, 1.5.1, or 1.6.0 or later to mitigate this risk.

Affected Version(s)

bacnet-stack < 1.4.5 < 1.4.5

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
https://github.com/bacnet-stack/bacnet-stack/pull/1410
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CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.