CVE-2019-12480
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 33.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 33.89% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · first 22 July 2019
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- bacnet protocol stack project/bacnet protocol stack
- Source
- cve@mitre.org
EPSS moved from 24.9% on 21 September 2026 to 33.9% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- 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/Exploit, Third 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/Exploit, Third 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.