{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-73108", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-08-10T21:04:42.166Z", "datePublished": "2026-08-26T13:00:29.283Z", "dateUpdated": "2026-08-26T13:00:29.283Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-26T13:00:29.283Z"}, "title": "RustDesk < 1.4.7 Uncontrolled Memory Allocation DoS via BytesCodec", "descriptions": [{"lang": "en", "value": "RustDesk versions before 1.4.7 contain an uncontrolled speculative memory allocation vulnerability in BytesCodec. Before authentication, the decoder trusts the payload length encoded in a four-byte frame header and reserves that amount before receiving the payload. A crafted header can request up to 1,073,741,823 bytes of capacity, allowing unauthenticated attackers to use concurrent TCP connections to cause memory exhaustion and denial of service. The fix caps header-triggered speculative preallocation at 256 KiB."}], "tags": ["x_open-source"], "datePublic": "2026-07-29T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-770", "description": "Allocation of Resources Without Limits or Throttling", "type": "CWE"}]}], "affected": [{"defaultStatus": "unaffected", "vendor": "rustdesk", "product": "rustdesk", "packageURL": "pkg:github/rustdesk/rustdesk", "repo": "https://github.com/rustdesk/rustdesk", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThan": "1.4.7"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.7, "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"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}], "references": [{"url": "https://github.com/rustdesk/rustdesk/releases/tag/1.4.7", "name": "Release Notes", "tags": ["release-notes"]}, {"url": "https://github.com/rustdesk/hbb_common/commit/547da54b4ee58eed47163fbd47edb4639e3d88de", "name": "hbb_common Patch Commit", "tags": ["patch"]}, {"url": "https://github.com/rustdesk/rustdesk/commit/518296f2570d107ad416f29ade5fcce3177f4115", "name": "RustDesk Patch Commit", "tags": ["patch"]}, {"url": "https://www.vulncheck.com/advisories/rustdesk-uncontrolled-memory-allocation-dos-via-bytescodec", "tags": ["third-party-advisory"]}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "vulncheck"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.4.7)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "rustdesk", "source": "cna", "vendor": "rustdesk"}, "product": "rustdesk", "vendor": "rustdesk"}], "created": "2026-08-26T14:45:04.134602+00:00", "updated": "2026-08-26T15:00:07.459481+00:00", "vendors": ["rustdesk", "rustdesk$PRODUCT$rustdesk"]}