CVE-2020-36872 (GCVE-0-2020-36872)
Vulnerability from cvelistv5 – Published: 2025-11-26 22:13 – Updated: 2026-07-28 01:47
VLAI
EPSS
VEX
Title
BACnet Test Server 1.01 Malformed BVLC Length DoS
Summary
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
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-28 19:22 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://www.zeroscience.mk/en/vulnerabilities/ZSL… | technical-descriptionexploit |
| https://www.exploit-db.com/exploits/48860 | exploit |
| https://packetstormsecurity.com/files/159504 | exploit |
| https://cxsecurity.com/issue/WLB-2020100045 | exploit |
| https://www.bac-test.com/ | product |
| https://www.vulncheck.com/advisories/bacnet-test-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| BACnet Interoperability Test Services, Inc. | BACnet Test Server |
Affected:
0 , ≤ 1.01
(custom)
cpe:2.3:a:philips:interoperability_solution_xds:*:*:*:*:*:*:*:* |
Date Public
2020-10-07 00:00
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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