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CVE-2026-49323 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Automotive Security Research Group (ASRG)
CVSS-B 4.1 MEDIUM
Vector:  CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
Automotive Security Research Group (ASRG)

Weakness Enumeration

CWE-ID CWE Name Source
CWE-327 Use of a Broken or Risky Cryptographic Algorithm Automotive Security Research Group (ASRG)  
CWE-798 Use of Hard-coded Credentials Automotive Security Research Group (ASRG)  
CWE-1390 Weak Authentication Automotive Security Research Group (ASRG)  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-49323
NVD Published Date:
05/29/2026
NVD Last Modified:
05/29/2026
Source:
Automotive Security Research Group (ASRG)