CVE-2026-49323

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.7 / Impact : 3.6

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.asrg.io/security-advisories/cve-2026-49323-indian-scout-wcm-ecm-weak-authentication

Configurations

No configuration.

History

29 May 2026, 15:16

Type	Values Removed	Values Added
References	~~{'url': 'https://cwe.mitre.org/data/definitions/1390.html', 'source': 'cve@asrg.io'}~~	() https://www.asrg.io/security-advisories/cve-2026-49323-indian-scout-wcm-ecm-weak-authentication -

29 May 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-29 13:16

Updated : 2026-05-29 15:16

NVD link : CVE-2026-49323

Mitre link : CVE-2026-49323

CVE.ORG link : CVE-2026-49323

JSON object : View

Products Affected

No product.

CWE

CWE-327

Use of a Broken or Risky Cryptographic Algorithm

CWE-798

Use of Hard-coded Credentials

CWE-1390

Weak Authentication

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