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CVE-2026-49323— Indian Scout Bobber 2025 WCM-to-ECM weak authentication

CVSS 4.3 · Medium

Affected Version Matrix 1

VendorProductVersion RangeStatus
Indian Motorcycle (Polaris Inc.)Scout Bobber + Tech2025affected
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I. Basic Information for CVE-2026-49323

Vulnerability Information
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Vulnerability Title
Indian Scout Bobber 2025 WCM-to-ECM weak authentication
Source: NVD (National Vulnerability Database)
Vulnerability Description
Weak authentication between the Wireless Control Module (WCM) and the Engine Control Module (ECM) of the Indian Motorcycle Scout Bobber + Tech 2025 model year allows an adjacent-network attacker with read access to the in-vehicle network to recover the per-vehicle ECM immobilizer secret by passively observing a single seed/key exchange. The WCM derives its response using a reversible, non-cryptographic operation rather than a cryptographic challenge-response, so the persistent immobilizer secret can be reconstructed from one captured exchange. With this secret the attacker can authenticate to the ECM independently of the WCM and start the engine, defeating the immobilizer. Specific protocol details have been withheld pending vendor remediation.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1390
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Indian Motorcycle (Polaris Inc.)Scout Bobber + Tech 2025 -

II. Public POCs for CVE-2026-49323

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III. Intelligence Information for CVE-2026-49323

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Vendor Advisories for CVE-2026-49323 (1)

Same Patch Batch · Indian Motorcycle (Polaris Inc.) · 2026-05-29 · 7 CVEs total

CVE-2026-493244.6 MEDIUMIndian Scout Bobber 2025 WCM brute-force
CVE-2026-493164.6 MEDIUMIndian Scout Bobber 2025 WCM CAN bus-off attack silently bypasses anti-theft shutdown
CVE-2026-493254.6 MEDIUMIndian Scout Bobber 2025 WCM voltage-based shutdown
CVE-2026-493224.3 MEDIUMIndian Scout Bobber 2025 Infotainment-to-WCM weak authentication allows recovery of user P
CVE-2026-493172.4 LOWIndian Scout Bobber 2025 Infotainment Digital Round skips PIN entry when WCM is silent at
CVE-2026-493182.4 LOWIndian Scout Bobber 2025 Infotainment Digital Round skips PIN entry when WCM is silent at

IV. Related Vulnerabilities

Same product: Scout Bobber + Tech
Same vendor: Indian Motorcycle (Polaris Inc.)
Same weakness: CWE-1390

V. Comments for CVE-2026-49323

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