CVE-2020-36872

8.7 highEPSS 0.5%

High (8.7). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.7 high

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
CWE: CWE-400
Published: 2025-11-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://cxsecurity.com/issue/WLB-2020100045
https://packetstormsecurity.com/files/159504
https://www.bac-test.com/
https://www.exploit-db.com/exploits/48860
https://www.vulncheck.com/advisories/bacnet-test-server-malformed-bvlc-length-dos

Check your stack JSON