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Vulnerability record · CVE-2019-12480 · published 30 May 2019

CVE-2019-12480: Bacnet protocol stack project bacnet protocol stack out-of-bounds read vulnerability

Bacnet Protocol Stack Project · Bacnet Protocol Stack

BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial of service in BACnet APDU Layer because a malformed DCC in AtomicWriteFile, AtomicReadFile and DeviceCommunicationControl services. An unauthenticated remote attacker could cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.

7.5 CVSS 3.0 High EPSS 34% · top 1.7% CWE-125 · Out-of-bounds read
7.5CVSS 3.0 base score, v2 5.0
34%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

BACnet Protocol Stack through 0.8.6 has a segmentation fault leading to denial of service in BACnet APDU Layer because a malformed DCC in AtomicWriteFile, AtomicReadFile and DeviceCommunicationControl services. An unauthenticated remote attacker could cause a denial of service (bacserv daemon crash) because there is an invalid read in bacdcode.c during parsing of alarm tag numbers.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/153716/BACnet-Stack-0.8.6-Denial-Of-Service.html
https://1modm.github.io/CVE-2019-12480.html
https://sourceforge.net/p/bacnet/bugs/62/ ExploitThird Party Advisory
https://sourceforge.net/p/bacnet/code/3220
https://sourceforge.net/p/bacnet/code/3223
https://sourceforge.net/p/bacnet/code/3224
https://sourceforge.net/p/bacnet/code/3225
http://packetstormsecurity.com/files/153716/BACnet-Stack-0.8.6-Denial-Of-Service.html
https://1modm.github.io/CVE-2019-12480.html
https://sourceforge.net/p/bacnet/bugs/62/ ExploitThird Party Advisory
https://sourceforge.net/p/bacnet/code/3220
https://sourceforge.net/p/bacnet/code/3223
https://sourceforge.net/p/bacnet/code/3224
https://sourceforge.net/p/bacnet/code/3225

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Source: NIST National Vulnerability Database (record CVE-2019-12480), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.