The following table lists the changes that have been made to the
CVE-2020-36872 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.
-
New CVE Received
by [email protected]Nov. 26, 2025
Action Type Old Value New Value Added Description BACnet Test Server versions up to and including 1.01 contains a remote denial of service vulnerability in its BACnet/IP BVLC packet handling. The server fails to properly validate the BVLC Length field in incoming UDP BVLC frames on the default BACnet port (47808/udp). A remote unauthenticated attacker can send a malformed BVLC Length value to trigger an access violation and crash the application, resulting in a denial of service. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-400 Added Reference https://cxsecurity.com/issue/WLB-2020100045 Added Reference https://packetstormsecurity.com/files/159504 Added Reference https://www.bac-test.com/ Added Reference https://www.exploit-db.com/exploits/48860 Added Reference https://www.vulncheck.com/advisories/bacnet-test-server-malformed-bvlc-length-dos Added Reference https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5597.php