🛡️ CVE-2026-41475
🔴 CVSS 9.1 — Critical ⚠️ Exploit Public CWE-125 NVD
9.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to 1.4.3, an out-of-bounds read vulnerability in bacnet-stack's WritePropertyMultiple service decoder allows unauthenticated remote attackers to read past allocated buffer boundaries by sending a truncated WPM request. The vulnerability stems from wpm_decode_object_property() calling the deprecated decode_tag_number_and_value() function, which performs no bounds checking on the input buffer. A crafted BACnet/IP packet with a truncated property payload causes the decoder to read 1-7 bytes past the end of the buffer, leading to crashes or information disclosure on embedded BACnet devices. This vulnerability is fixed in 1.4.3.

Details

Severity CRITICAL
CVSS Score 9.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CWE CWE-125
Public Exploit ⚠️ Yes
Source NVD
Published 2026-04-24
Updated 2026-06-02
Modified 2026-04-28
Fix URL N/A

Affected Packages

Software From version Fixed in
bacnet-stack — —

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