{"id":"CVE-2026-49316","state":"PUBLISHED","title":"Indian Scout Bobber 2025 WCM CAN bus-off attack silently bypasses anti-theft shutdown","description":"Expected behavior violation in the in-vehicle network of the Indian Motorcycle Scout Bobber + Tech 2025 model year allows an adjacent-network attacker to bypass the motorcycle's anti-theft shutdown by forcing the Wireless Control Module (WCM) into the CAN bus-off state. Using a well-known CAN error-frame injection technique against a periodic WCM transmission, the attacker drives the WCM CAN controller's transmit error counter past the bus-off threshold, after which the WCM stops transmitting all messages, including the shutdown command. Peer ECUs do not interpret WCM silence as a security event and continue normal operation, allowing the motorcycle to be operated despite the immobilizer never having been unlocked. Specific protocol details have been withheld pending vendor remediation.","publishedAt":"2026-05-29T12:39:23.104Z","updatedAt":"2026-06-27T08:47:44.904Z","severity":{"score":4.1,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"ASRG"},"assigner":"ASRG","products":["Indian Motorcycle Scout Bobber + Tech"],"affected":[{"vendor":"Indian Motorcycle","product":"Scout Bobber + Tech","defaultStatus":"unknown","versions":[{"version":"2025","status":"affected","versionType":"model-year"}],"platforms":["OEM Motorcycle"],"modules":["Wireless Control Module (WCM)"]}],"references":["https://cwe.mitre.org/data/definitions/440.html"],"weaknesses":["CWE-440","CWE-754","CWE-693"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/49xxx/CVE-2026-49316.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49316","state":"PUBLISHED","datePublished":"2026-05-29T12:39:23.104Z","dateUpdated":"2026-06-27T08:47:44.904Z","assignerShortName":"ASRG","assignerOrgId":"c15abc07-96a9-4d11-a503-5d621bfe42ba","dateReserved":"2026-05-29T07:26:43.198Z"},"containers":{"cna":{"title":"Indian Scout Bobber 2025 WCM CAN bus-off attack silently bypasses anti-theft shutdown","descriptions":[{"lang":"en","value":"Expected behavior violation in the in-vehicle network of the Indian Motorcycle Scout Bobber + Tech 2025 model year allows an adjacent-network attacker to bypass the motorcycle's anti-theft shutdown by forcing the Wireless Control Module (WCM) into the CAN bus-off state. Using a well-known CAN error-frame injection technique against a periodic WCM transmission, the attacker drives the WCM CAN controller's transmit error counter past the bus-off threshold, after which the WCM stops transmitting all messages, including the shutdown command. Peer ECUs do not interpret WCM silence as a security event and continue normal operation, allowing the motorcycle to be operated despite the immobilizer never having been unlocked. Specific protocol details have been withheld pending vendor remediation."}],"affected":[{"vendor":"Indian Motorcycle","product":"Scout Bobber + Tech","defaultStatus":"unknown","versions":[{"version":"2025","status":"affected","versionType":"model-year"}],"platforms":["OEM Motorcycle"],"modules":["Wireless Control Module (WCM)"]}],"references":[{"url":"https://cwe.mitre.org/data/definitions/440.html","tags":["technical-description"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"PHYSICAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"MEDIUM","baseScore":4.6,"vectorString":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"PHYSICAL","attackComplexity":"LOW","attackRequirements":"PRESENT","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":"MEDIUM","baseScore":4.1,"vectorString":"CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-440","lang":"en","description":"CWE-440 Expected Behavior Violation","type":"CWE"},{"cweId":"CWE-754","lang":"en","description":"CWE-754 Improper Check for Unusual or Exceptional Conditions","type":"CWE"},{"cweId":"CWE-693","lang":"en","description":"CWE-693 Protection Mechanism Failure","type":"CWE"}]}],"providerMetadata":{"shortName":"ASRG","orgId":"c15abc07-96a9-4d11-a503-5d621bfe42ba","dateUpdated":"2026-06-27T08:47:44.904Z"},"datePublic":"2026-05-29T15:00:00.000Z","impacts":[{"descriptions":[{"lang":"en","value":"Obstruction"}]},{"descriptions":[{"lang":"en","value":"Software Integrity Attack"}]}],"solutions":[{"lang":"en","value":"Treat absence of the WCM heartbeat as a security event in peer ECUs — command shutdown if the WCM's periodic message is missing beyond a bounded interval. Authenticate the heartbeat with AUTOSAR SecOC or equivalent to prevent post-silence spoofing. Auto-recover the WCM from bus-off and log the event.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Treat absence of the WCM heartbeat as a security event in peer ECUs — command shutdown if the WCM's periodic message is missing beyond a bounded interval. Authenticate the heartbeat with AUTOSAR SecOC or equivalent to prevent post-silence spoofing. Auto-recover the WCM from bus-off and log the event.</p>"}]}],"timeline":[{"time":"2025-03-26T00:00:00.000Z","lang":"en","value":"Reported to Indian Motorcycle by Rustic Security LLC (responsible disclosure)"}],"credits":[{"lang":"en","value":"Scott Sheahan, Rustic Security LLC","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-29T15:26:52.193932Z","id":"CVE-2026-49316","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-29T15:26:58.445Z"}}]}}}