CVE-2026-45341

HIGH
MEDIUM Priority: 0.02 BB Relevance: 75/100
Published: 2026-11-12 Modified: 2026-11-13 First seen: 2026-11-12 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

BACnet Stack is a BACnet open source protocol stack C library for embedded systems. From versions 1.4.0 to before 1.4.4, and 1.5.0 to before 1.5.1, a NULL pointer dereference can be triggered in bacnet_device_object_reference_decode() when a WriteProperty request updates OBJECT_STRUCTURED_VIEW / PROP_SUBORDINATE_LIST. This issue has been patched in versions 1.4.4 and 1.5.1.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
bacnet-stack bacnet-stack >= 1.4.0, < 1.4.4
bacnet-stack bacnet-stack >= 1.5.0, < 1.5.1
bacnet-stack bacnet-stack >= 1.4.0, < 1.4.4
bacnet-stack bacnet-stack >= 1.5.0, < 1.5.1

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.27%
Raw Score 0.002740
Percentile 20.1%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00274
2026-11-13
0.00274

Intelligence Sources

mitre ref →
nvd ref →