CVE-2026-101055

Executive Summary

CVE-2026-101055 is an information disclosure vulnerability in the Thinkware U3000 dashcam (firmware up to 1.02.04) affecting the GET_STATUS function of its TCP service. By manipulating the wifi_info argument, a remote, unauthenticated attacker can cause the device to leak sensitive information. With a public exploit already released and a CVSS score of 5.3, affected devices are exposed to remote reconnaissance and credential/network-information harvesting with no vendor-supplied fix currently available.

Technical Analysis

The flaw resides in the GET_STATUS handler within the Thinkware U3000's TCP service component. According to the NVD description, manipulation of the wifi_info argument results in information disclosure, classified under CWE-200 (Exposure of Sensitive Information to an Authorized Actor). The vulnerability is network-reachable (AV:N), requires no privileges (PR:N) and no user interaction (UI:N), with low attack complexity (AC:L). The confidentiality impact is rated Low (C:L) while integrity and availability are unaffected (I:N/A:N), yielding a base score of 5.3.

The core issue class is improper handling of an input argument that causes the service to return data beyond what is intended. Rather than a memory-corruption or RCE primitive, this is an over-disclosure bug: the GET_STATUS response is influenced by the wifi_info parameter in a way that exposes information the caller should not receive. Because it is reachable over the network without authentication, any host able to communicate with the device's TCP service can attempt to trigger it.

At the code level, the description does not disclose the exact parsing logic, memory layout, or response format. No function signature beyond GET_STATUS, no endpoint path, and no additional parameters are provided. Any treatment of surrounding implementation details (buffer sizes, encoding, response schema) would be speculative and is therefore omitted. Analysts should treat the wifi_info parameter as the sole confirmed injection point and validate behavior against a physical or emulated device.

The absence of an availability or integrity impact indicates the operation is read-only from the attacker's perspective: the device continues functioning normally while returning the leaked data. This makes the attack stealthy, as there is no crash or service disruption to signal exploitation.

Exploitation Scenarios

No public PoC code or Nuclei template is included in the intelligence feed, though the NVD description states that an exploit "has been released to the public and may be used for attacks." The attack chain below is described at the vulnerability-class level and tied only to confirmed elements from the description.

1. Reconnaissance / Target Identification. The attacker identifies reachable Thinkware U3000 devices on a network segment or across the internet using service fingerprinting (e.g., Shodan queries for the product banner). Because the service is a TCP service, a simple connectivity check to the relevant port confirms reachability prior to exploitation.

2. Triggering the Flaw. The attacker issues a request to the TCP service that invokes the GET_STATUS function and supplies a crafted value for the wifi_info argument. The malformed or unexpected wifi_info value is what the NVD identifies as the manipulation causing disclosure. No authentication step is required (PR:N), and no user action is needed on the device (UI:N).

3. Payload / Execution. At the vulnerability-class level, this is an argument-manipulation disclosure: the attacker varies the wifi_info input to drive the GET_STATUS response into returning information it should restrict. The description does not specify the exact payload bytes, encoding, or response structure, and none are fabricated here.

4. Post-Exploitation Impact. The attacker obtains disclosed information (nature not further specified in the description). Because confidentiality impact is Low, the likely value is limited-scope data such as device or wireless configuration details, but the description does not enumerate exactly what fields are exposed. The attacker can repeat the request or chain it with other device enumeration to build a fuller picture of the target.

The critical operational fact is availability of a public exploit. Even without a supplied PoC artifact, defenders must assume the technique is reproducible by a motivated adversary.

Impact Assessment

The CVSS 3.1 base score is 5.3 (Medium), derived from:

• AV:N — exploitable over the network, widening the attacker pool to anyone with TCP reachability.
• AC:L — no special conditions or race windows; the argument manipulation is straightforward.
• PR:N — no credentials required, so authentication is not a mitigating control here.
• UI:N — the device owner need not interact.
• S:U — impact is confined to the vulnerable device component.
• C:L / I:N / A:N — limited confidentiality loss only; no data modification or denial of service.

Business impact. Thinkware U3000 is a consumer/vehicle dashcam. Exposure ranges from a single vehicle to fleets. Disclosed information could aid further attacks (e.g., network details enabling lateral movement onto a home or corporate Wi-Fi the device shares). For enterprise fleets, a compromised dashcam is a foothold on the vehicle or depot network. The Low confidentiality rating caps the severity, but the remote, unauthenticated, exploit-available status elevates operational urgency.

Blast radius. Every U3000 running firmware up to and including 1.02.04 with the TCP service reachable is in scope. Devices behind NAT/firewall with no port forwarding are materially lower risk; internet-exposed units are directly at risk.

Detection Guidance

Sigma Rule

title: Thinkware U3000 GET_STATUS wifi_info Information Disclosure Attempt
id: 7b2f9c1e-4a63-4d0e-9c11-5e8a2d6f3b10
status: experimental
description: Detects network-level access to the Thinkware U3000 TCP service attempting to invoke GET_STATUS with a manipulated wifi_info argument (CVE-2026-101055).
references:
  - https://nvd.nist.gov/vuln/detail/CVE-2026-101055
author: Threat Intelligence
date: 2026/01/01
tags:
  - attack.t1190
  - cve.2026-101055
logsource:
  category: network_connection
  product: suricata
detection:
  selection_cmd:
    payload_printable|contains: 'GET_STATUS'
  selection_param:
    payload_printable|contains: 'wifi_info'
  condition: selection_cmd and selection_param
falsepositives:
  - Legitimate management or diagnostic traffic against the device service
level: medium

YARA Rule

rule CVE_2026_101055_Thinkware_U3000_GET_STATUS
{
    meta:
        description = "Detects payloads referencing the Thinkware U3000 GET_STATUS function and wifi_info argument associated with CVE-2026-101055"
        author = "Threat Intelligence"
        date = "2026-01-01"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2026-101055"
        severity = "medium"

    strings:
        $fn  = "GET_STATUS" ascii wide nocase
        $arg = "wifi_info" ascii wide nocase

    condition:
        $fn and $arg
}

Suricata IDS Rule

alert tcp any any -> any any (msg:"CVE-2026-101055 Thinkware U3000 GET_STATUS wifi_info Information Disclosure Attempt"; flow:established,to_server; content:"GET_STATUS"; nocase; content:"wifi_info"; nocase; distance:0; threshold:type limit, track by_src, count 5, seconds 60; classtype:attempted-recon; reference:cve,2026-101055; sid:2026101055; rev:1;)

Elastic Detection

network where network.transport == "tcp" and
  contains~(process.command_line, "GET_STATUS") and
  contains~(process.command_line, "wifi_info")

Note: In practice, network payload inspection requires a Zeek/Suricata packet stream feeding Elastic; the EQL above is expressed against the resulting normalized network event fields for the relevant service port.

Splunk SPL Query

index=network sourcetype=suricata OR sourcetype=bro OR sourcetype=zeek
| search payload_printable="*GET_STATUS*" payload_printable="*wifi_info*"
| stats count min(_time) as first_seen max(_time) as last_seen by src_ip, dest_ip, dest_port
| where count > 0
| convert ctime(first_seen) ctime(last_seen)

Wazuh OSSEC Rule

<group name="thinkware,cve-2026-101055,">
  <rule id="101055" level="6">
    <decoded_as>json</decoded_as>
    <field name="payload_printable">GET_STATUS</field>
    <field name="payload_printable">wifi_info</field>
    <description>CVE-2026-101055: Thinkware U3000 GET_STATUS wifi_info information disclosure attempt detected</description>
    <mitre>
      <id>T1190</id>
    </mitre>
    <group>attempted_recon,</group>
  </rule>
</group>

Mitigation & Patch Guidance

Patch confidence: 0/4 — UNPATCHED. No patch evidence from any tracked source. The vendor (Thinkware) was contacted but did not respond, so no fixed firmware version is identified.

1. Immediate mitigations (no patch available):

• Remove or block internet exposure of the device's TCP service. Do not port-forward the dashcam service to the WAN.
• Segment IoT/dashcam devices onto an isolated VLAN with strict egress/ingress ACLs; deny inbound access to the TCP service from untrusted zones.
• Restrict access to the TCP service to a small set of administrative hosts via firewall rules on the specific port.
• Monitor for the detection signatures above and alert on any GET_STATUS/wifi_info traffic from unexpected sources.
• Consider disabling the TCP service from the device UI if the feature is non-essential.

2. Patch / upgrade steps:

• There is currently no vendor patch. Register for Thinkware security advisories and monitor firmware releases for the U3000 above 1.02.04.
• Until a fix ships, treat any U3000 at or below 1.02.04 as vulnerable and apply the compensating controls in section 1.
• Re-validate the vulnerability against any newly released firmware before removing compensating controls.

3. Long-term hardening:

• Adopt a device-inventory and firmware-tracking program so dashcams and similar IoT endpoints are known and monitored.
• Require vendors to provide a security contact and disclosure SLA during procurement; the non-response here is itself a risk factor.
• Enforce least-privilege network architecture (zero-trust segmentation) so a single low-severity disclosure cannot bridge into higher-value networks.
• Deploy continuous network monitoring on IoT segments to catch argument-manipulation and recon traffic patterns.

References

• NVD — CVE-2026-101055: https://nvd.nist.gov/vuln/detail/CVE-2026-101055
• CWE-200 — Exposure of Sensitive Information to an Authorized Actor: https://cwe.mitre.org/data/definitions/200.html
• MITRE ATT&CK T1190 — Exploit Public-Facing Application: https://attack.mitre.org/techniques/T1190/
• Thinkware U3000 product page (vendor firmware/support channel): https://www.thinkware.com/
• FIRST EPSS: not yet scored for this CVE (no value available at time of writing); CISA KEV: not listed.