Vulnerabilities CVE-2020-36872

CVE-2020-36872

High

Open

TLP:CLEAR

BACnet Test Server 1.01 Malformed BVLC Length DoS

NVD CVE.org

AI Analysis

No AI analysis yet.

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.

Details

CVSS Score: 8.7
EPSS Score ⓘ: 0.48%

39.3th percentile
CVSS 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
Confidence: 90%
Published: Nov 26, 2025
Last Modified: Jul 28, 2026

Notes

No notes yet. Click "Add Note" to create the first analysis note.

Opinions

No opinions yet. Be the first to assess this intelligence.