CVE-2020-36872

BACnet Test Server 1.01 Malformed BVLC Length DoS

Published Nov 26, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Philips
Philips interoperability Solution Xds
CPEs cpe:2.3:a:philips:interoperability_solution_xds:*:*:*:*:*:*:*:*
Vendors & Products Philips
Philips interoperability Solution Xds
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Bacnet Test
Bacnet Test test Server
Vendors & Products Bacnet Test
Bacnet Test test Server
Type Values Removed Values 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.
Title BACnet Test Server 1.01 Malformed BVLC Length DoS
Weaknesses CWE-400
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 28, 2026, 1:47 AM
Reserved
Oct 30, 2025, 3:45 PM
Status
Deferred
Published
Nov 26, 2025, 11:15 PM
Modified
Jun 17, 2026, 3:16 AM