CVE-2023-51773

Name: CVE-2023-51773
Creator: NVD / NIST
Published: 2024-02-29T01:42:05.557+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.05%

Last modified Jun 17, 2026

CVE-2023-51773 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

Description

BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Probability

1.05%

60.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-126

Affected Software

Vendor	Product	Versions
Bacnetstack	Bacnet Stack	< 1.3.2

References

Timeline

Published: Feb 29, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-51773?

BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.

How severe is CVE-2023-51773?

CVE-2023-51773 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.

How do I fix CVE-2023-51773?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-51773?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST