Stack-Based Out-of-Bounds Write in BACnet Stack Library by BACnet
CVE-2026-47258

8.2HIGH

Key Information:

Vendor

Bacnet-stack

Status
Bacnet-stack
Vendor
CVE Published:
12 November 2026

What is CVE-2026-47258?

The BACnet Stack, an open-source protocol library for embedded systems, contains a vulnerability that allows for a stack-based out-of-bounds write. This flaw exists in the implementation of the Notification Class object, specifically when managing the recipient-list property through the AddListElement function. It could lead to unexpected behaviors or potential system exploitation. The issue has been addressed and resolved in versions 1.4.4, 1.5.1, and 1.6.0.

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...
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https://github.com/bacnet-stack/bacnet-stack/pull/1353
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CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.