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        "cveId": "CVE-2020-36872",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2025-10-30T15:45:57.763Z",
        "datePublished": "2025-11-26T22:13:47.565Z",
        "dateUpdated": "2026-05-14T02:06:36.867Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "BACnet Test Server",
                    "vendor": "BACnet Interoperability Test Services, Inc.",
                    "versions": [
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                            "lessThanOrEqual": "1.01",
                            "status": "affected",
                            "version": "0",
                            "versionType": "custom"
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            "credits": [
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                    "lang": "en",
                    "type": "finder",
                    "value": "Gjoko Krstic of Zero Science Lab"
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                            "value": "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."
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                }
            ],
            "metrics": [
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                    "cvssV4_0": {
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "attackVector": "NETWORK",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "exploitMaturity": "NOT_DEFINED",
                        "privilegesRequired": "NONE",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "userInteraction": "NONE",
                        "valueDensity": "NOT_DEFINED",
                        "vectorString": "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",
                        "version": "4.0",
                        "vulnAvailabilityImpact": "HIGH",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnerabilityResponseEffort": "NOT_DEFINED"
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                    "format": "CVSS",
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                            "lang": "en",
                            "value": "GENERAL"
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                    "descriptions": [
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                            "description": "CWE-400 Uncontrolled Resource Consumption",
                            "lang": "en",
                            "type": "CWE"
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                "shortName": "VulnCheck",
                "dateUpdated": "2026-05-14T02:06:36.867Z"
            },
            "references": [
                {
                    "tags": [
                        "technical-description",
                        "exploit"
                    ],
                    "url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5597.php"
                },
                {
                    "tags": [
                        "exploit"
                    ],
                    "url": "https://www.exploit-db.com/exploits/48860"
                },
                {
                    "tags": [
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                    "url": "https://packetstormsecurity.com/files/159504"
                },
                {
                    "tags": [
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                    "url": "https://cxsecurity.com/issue/WLB-2020100045"
                },
                {
                    "tags": [
                        "product"
                    ],
                    "url": "https://www.bac-test.com/"
                },
                {
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/bacnet-test-server-malformed-bvlc-length-dos"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "timeline": [
                {
                    "lang": "en",
                    "time": "2020-06-10T16:00:00.000Z",
                    "value": "Exploit is publicly disclosed"
                }
            ],
            "title": "BACnet Test Server 1.01 Malformed BVLC Length DoS",
            "x_generator": {
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            "datePublic": "2020-10-07T00:00:00.000Z"
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