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TI-2026-36506 Aliases CVE-2026-49323GHSA-f65x-w4fq-xj28

Indian Scout Bobber 2025 WCM-to-ECM weak authentication

Priority LOW 18CWE-1390Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Information disclosure, Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-327 and CWE-798.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00107 1st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Indian MotorcycleScout Bobber + Tech2025—No fix listedCNA
  • Scout Bobber + Tech VendorIndian Motorcycle Affected 2025 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-49323
  2. 2026-10-03 Alias added: GHSA-f65x-w4fq-xj28

References

Advisory 1

  • TI-2026-36508 Indian Scout Bobber 2025 WCM voltage-based shutdown CVSS 4.0MEDIUM 4.1
  • TI-2026-36507 Indian Scout Bobber 2025 WCM brute-force CVSS 4.0MEDIUM 4.1
  • TI-2026-36505 Indian Scout Bobber 2025 Infotainment-to-WCM weak authentication allows recovery of user PIN from observed exchange CVSS 4.0MEDIUM 4.1
  • TI-2026-36501 Indian Scout Bobber 2025 WCM CAN bus-off attack silently bypasses anti-theft shutdown CVSS 4.0MEDIUM 4.1
  • TI-2026-36503 Indian Scout Bobber 2025 Infotainment Digital Round skips PIN entry when WCM is silent at boot CVSS 4.0LOW 1.0
  • TI-2026-36502 Indian Scout Bobber 2025 Infotainment Digital Round skips PIN entry when WCM is silent at boot CVSS 4.0LOW 1.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences