CVE-2026-58265

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-58265", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-29T21:54:30.331Z", "datePublished": "2026-11-13T15:58:11.001Z", "dateUpdated": "2026-11-13T15:58:11.001Z"}, "containers": {"cna": {"title": "BACnet Stack: Out-of-bounds read in BACnet/SC proprietary header-option decode (bvlc_sc_decode_proprietary_option)", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-j66x-fr38-r7m5", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-j66x-fr38-r7m5"}, {"name": "https://github.com/bacnet-stack/bacnet-stack/pull/1396", "tags": ["x_refsource_MISC"], "url": "https://github.com/bacnet-stack/bacnet-stack/pull/1396"}], "affected": [{"vendor": "bacnet-stack", "product": "bacnet-stack", "versions": [{"version": "< 1.4.5", "status": "affected"}, {"version": "< 1.5.1", "status": "affected"}, {"version": "< 1.6.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-13T15:58:11.001Z"}, "descriptions": [{"lang": "en", "value": "BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.5, 1.5.1, and 1.6.0, a BACnet/SC peer can trigger a heap out-of-bounds read (up to 3 bytes), pre-authentication, in the BACnet/SC header-option decoder. bvlc_sc_decode_proprietary_option() reads the vendor-id and option-type at fixed offsets [3],[4],[5] before checking the option's declared header length, and the option-list validator never enforces a minimum length for proprietary options. This issue has been patched in versions 1.4.5, 1.5.1, and 1.6.0."}], "source": {"advisory": "GHSA-j66x-fr38-r7m5", "discovery": "UNKNOWN"}}}}

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{"affected": [{"affectedData": [{"product": "bacnet-stack", "vendor": "bacnet-stack", "versions": [{"status": "affected", "version": "< 1.4.5"}, {"status": "affected", "version": "< 1.5.1"}, {"status": "affected", "version": "< 1.6.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.5, 1.5.1, and 1.6.0, a BACnet/SC peer can trigger a heap out-of-bounds read (up to 3 bytes), pre-authentication, in the BACnet/SC header-option decoder. bvlc_sc_decode_proprietary_option() reads the vendor-id and option-type at fixed offsets [3],[4],[5] before checking the option's declared header length, and the option-list validator never enforces a minimum length for proprietary options. This issue has been patched in versions 1.4.5, 1.5.1, and 1.6.0."}], "id": "CVE-2026-58265", "lastModified": "2026-11-13T16:19:12.393", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-13T16:19:12.393", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/bacnet-stack/bacnet-stack/pull/1396"}, {"source": "security-advisories@github.com", "url": "https://github.com/bacnet-stack/bacnet-stack/security/advisories/GHSA-j66x-fr38-r7m5"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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