CVE-2026-30789

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The capture-replay claim (CWE-294) is withdrawn: the challenge is regenerated per connection (challenge = Config::get_auto_password(6)), so a captured proof is not replayable against the legitimate server. The 1.4.7 OTP brute-force limiter and the existing LOGIN_FAILURES counter constrain only ONLINE attempts and do not address offline recovery.\n\nThis vulnerability is associated with program files src/client.rs and program routines handle_hash(), handle_login_from_ui() (login proof construction).\n\nThis issue affects RustDesk Client: through 1.4.8.", "supportingMedia": [{"type": "text/html", "value": "Use of Password Hash With Insufficient Computational Effort, Improper Restriction of Excessive Authentication Attempts vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Client login, peer authentication modules) allows Password Brute Forcing.<br><br>The authentication proof is SHA256(SHA256(password + salt) + challenge), where both the salt and the challenge are generated entirely by the server with no client-side nonce, and the hash uses no slow key-derivation function. 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The 1.4.7 OTP brute-force limiter and the existing LOGIN_FAILURES counter constrain only ONLINE attempts and do not address offline recovery.\n\nThis vulnerability is associated with program files src/client.rs and program routines handle_hash(), handle_login_from_ui() (login proof construction).\n\nThis issue affects RustDesk Client: through 1.4.8."}, {"lang": "es", "value": "Omisi\u00f3n de autenticaci\u00f3n por captura-repetici\u00f3n, vulnerabilidad de uso de hash de contrase\u00f1a con esfuerzo computacional insuficiente en rustdesk-client RustDesk Client rustdesk-client en Windows, MacOS, Linux, iOS, Android (m\u00f3dulos de inicio de sesi\u00f3n del cliente, autenticaci\u00f3n de pares) permite la reutilizaci\u00f3n de IDs de sesi\u00f3n (tambi\u00e9n conocido como repetici\u00f3n de sesi\u00f3n). Esta vulnerabilidad est\u00e1 asociada con los archivos de programa src/client.Rs y las rutinas de programa hash_password(), construcci\u00f3n de prueba de inicio de sesi\u00f3n. Este problema afecta a RustDesk Client: hasta la versi\u00f3n 1.4.5."}], "id": "CVE-2026-30789", "lastModified": "2026-06-22T14:16:36.630", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-30789", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-17T14:32:41.844771Z", "version": "2.0.3"}}]}, "published": "2026-03-05T16:16:19.560", "references": [{"source": "2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe", "tags": ["Exploit", "Third Party Advisory"], "url": "https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub"}, {"source": "2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe", "tags": ["Product"], "url": "https://rustdesk.com/docs/en/client/"}, {"source": "2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe", "tags": ["Not Applicable"], "url": "https://www.vulsec.org/"}], "sourceIdentifier": "2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-916"}], "source": "2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["windows", "macos", "linux", "ios", "android"], "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.4.5]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "rustdesk_client", "vendor": "rustdesk-client"}], "created": "2026-03-06T15:01:44.580197+00:00", "updated": "2026-08-14T04:15:03.572359+00:00", "vendors": ["rustdesk-client", "rustdesk-client$PRODUCT$rustdesk_client"]}