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Scout Bobber + Tech CVE-2026-49324

| EUVDEUVD-2026-33289 MEDIUM
Uncontrolled Resource Consumption (CWE-400)
2026-05-29 ASRG GHSA-6x8x-4qf6-w7qg
4.1
CVSS 4.0 · Vendor: ASRG
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Gain physical proximity to target motorcycle
  2. Delivery
    Connect to in-vehicle network via OBD-II or diagnostic port
  3. Exploit
    Craft unauthenticated frames targeting WCM lockout counter
  4. Execution
    Transmit frames to increment counter beyond lockout threshold
  5. Persist
    Counter persists across power cycles
  6. Impact
    Immobilizer permanently locked, motorcycle un-startable

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource consumption limits
MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Physical adjacency to the target motorcycle is required along with write access to the in-vehicle network bus, consistent with the CVSS:3.1 AV:P designation. The attacker must be able to connect a device capable of injecting frames onto the in-vehicle network, most practically via the OBD-II port or equivalent diagnostic interface on the 2025 Scout Bobber + Tech. No authentication to the WCM is required (CVSS PR:N) - the lockout counter increments on any qualifying unauthenticated message. The limiting factors are: (1) physical proximity to the specific vehicle, (2) ability to connect hardware to the in-vehicle bus, and (3) knowledge of a sufficient frame format to trigger the counter, with specific thresholds undisclosed by the reporter. Remote or network-based exploitation is not possible given AV:P. The vulnerability is specific to the 2025 model year Scout Bobber + Tech and not confirmed on other Indian Motorcycle models.

Impact

The CVSS 3.1 base score of 4.6 (Medium) reflects the physical access requirement encoded in the vector (AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). The AV:P designation is critical context: while the attack requires no authentication (PR:N) and no user interaction (UI:N), it demands physical proximity to the vehicle and write-level access to its in-vehicle network bus, significantly constraining opportunistic mass exploitation. The sole impact is full Availability loss (A:H) - specifically permanent immobilization - with no confidentiality or integrity impact, which is consistent with the targeted nature of this vulnerability. No EPSS score was provided in the source data, and this CVE does not appear in the CISA KEV catalog, indicating no confirmed widespread active exploitation at time of analysis. No public proof-of-concept code has been identified. The real-world risk profile is best characterized as a targeted physical-access sabotage scenario - e.g., theft deterrence, fleet sabotage, or adversarial use against a specific individual's vehicle - rather than a remotely scalable attack. The CVSS Medium score is appropriate and not artificially deflated; the physical prerequisite is a genuine and substantial barrier. No conflicting signals between CVSS and description: both indicate physical proximity is required.

Exploit ScenarioDerived

An attacker with physical proximity to the target motorcycle - for example, a valet, mechanic, or someone with brief unattended access - connects to the in-vehicle network via the OBD-II diagnostic port and transmits a small number of crafted unauthenticated frames targeting the WCM lockout counter. Because the counter increments on any qualifying unauthenticated message and does not reset on power cycle, the motorcycle's immobilizer enters a permanent lockout state after the threshold is crossed, rendering the vehicle un-startable until the owner transports it to a dealer for service. No public exploit code has been identified, but the attack requires only basic CAN bus tooling and knowledge of the frame format.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – May 29, 2026

Permanent denial-of-service against the 2025 Indian Motorcycle Scout Bobber + Tech's Wireless Control Module (WCM) allows an adjacent-network attacker with write access to the in-vehicle network to irreversibly immobilize the motorcycle by deliberately tripping an immobilizer lockout counter that persists across power cycles. The WCM's lockout counter accepts increments from any unauthenticated message without session binding, meaning a small number of crafted in-vehicle network frames is sufficient to trigger a permanent lockout condition requiring dealer intervention to resolve. No public exploit code has been identified at time of analysis, and this vulnerability has not been added to the CISA KEV catalog, though the attack technique is straightforward given adjacent network access.

RemediationAI

No vendor-released patch has been identified at time of analysis; the CVE description explicitly states that specific lockout thresholds have been withheld pending vendor remediation, indicating Polaris Inc. is aware but has not published a fix. Owners and fleet operators should consult Indian Motorcycle / Polaris Inc. directly for firmware updates as they become available. As a compensating control, physical access to the in-vehicle network interface (typically the OBD-II port or diagnostic connector) should be restricted - for example, using OBD port locks or restricting physical access to the motorcycle when unattended. Note that this control reduces but does not eliminate risk, as other physical access paths to the CAN bus may exist. Dealers should also be prepared to reset the lockout counter for affected units. No references to a vendor security advisory were present in the provided data.

Affected VersionsENISA

Scout Bobber + Tech 2025

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Technical ContextAI · show details

The affected component is the Wireless Control Module (WCM), the subsystem responsible for immobilizer authentication in the 2025 Indian Motorcycle Scout Bobber + Tech (CPE: cpe:2.3:a:indian_motorcycle_(polaris_inc.):scout_bobber_+_tech:*:*:*:*:*:*:*:*). The WCM implements an anti-brute-force lockout on its immobilizer authentication algorithm - a standard automotive security control - but the underlying design flaw (CWE-400: Uncontrolled Resource Consumption) is that the lockout counter is a shared, globally accessible resource: it increments on receipt of any unauthenticated message on the in-vehicle network, lacks session binding to prevent replay or spoofing, and critically does not reset on power cycle. This means the counter is a depletable resource that can be exhausted by any frame source on the bus, not only by a legitimate key-fob authentication attempt. The in-vehicle network in question is almost certainly a CAN bus or similar automotive bus accessible via physical ports such as the OBD-II connector. The ASRG (Automotive Security Research Group) reported this finding, and specific lockout thresholds have been withheld pending vendor remediation.

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Severity by source

Vendor (ASRG) PRIMARY 4.1 MEDIUM
CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (ASRG) · only source for this CVE.

CVSS VectorVendor: ASRG

Attack Vector
Physical
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
None
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

1
CVSS changed
May 29, 2026 - 13:22 NVD
4.6 (MEDIUM) 4.1 (MEDIUM)

DescriptionCVE.org

Uncontrolled resource consumption in the Wireless Control Module (WCM) of the Indian Motorcycle Scout Bobber + Tech 2025 model year allows an adjacent-network attacker with write access to the in-vehicle network to permanently immobilize the motorcycle. The WCM enforces a brute-force lockout on the immobilizer authentication algorithm, but the lockout counter is reachable by any unauthenticated message, has no session binding, and does not reset on power cycle. An attacker can deliberately trip the lockout with a small number of crafted frames, leaving the bike un-startable until dealer service. Specific thresholds have been withheld pending vendor remediation.

Threat Intelligence Overview

EPSS Score
0.0%
Top 94% exploitable
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

20
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +20
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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