Live Exposure Defense: From CVE to Confirmed Exposure in 12 Hours – See more

Back
New CVE Detected

CVE-2026-86152 – Unauthenticated OS Command Injection – Tenda CP3 27.5.57.101

Be the first to know when new zero-days emerge:

Subscribe to Email Alerts
Subscribe to RSS Feed

Summary

CVE-2026-86152 is a critical OS command injection vulnerability in Tenda CP3 firmware version 27.5.57.101. The flaw resides in the CAutoAddWifi::ThreadProc function of Functions/AutoAddWifi.cpp within the device’s "Kylin" component, and can be exploited remotely without authentication to execute arbitrary operating system commands. The vulnerability carries a maximum CVSS v3.1 base score of 10.0 (Critical).

Technical details

  • Root cause: Insufficient sanitization of input processed by the CAutoAddWifi::ThreadProc function in Functions/AutoAddWifi.cpp, part of the device’s Kylin component, allowing attacker-controlled data to be passed into an OS command execution context.
  • Trigger conditions: An attacker sends a crafted request/input that reaches the vulnerable ThreadProc function; no authentication or user interaction is required.
  • Attack vector: Network — the vulnerability is remotely exploitable over the network with low attack complexity.
  • Impact: Successful exploitation allows arbitrary OS command execution, resulting in complete compromise of confidentiality, integrity, and availability of the affected device.

Affected software

  • Tenda CP3 firmware version 27.5.57.101 (Kylin component)

Severity

  • CVSS v3.1 Base Score: 10.0 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: No official vendor patch or advisory has been identified for this CVE at time of publication. Check Tenda’s official support channels regularly for firmware updates addressing this issue and apply them as soon as they become available.
  • If no patch is available:
    • Remove the affected device from direct internet exposure; do not expose its management/administrative interfaces to the public internet.
    • Restrict network access to the device to trusted internal hosts only, using firewall rules or network segmentation.
    • Disable any auto Wi-Fi provisioning/"AutoAddWifi" related functionality if configurable, until a fix is available.
    • Monitor device logs and network traffic for anomalous command execution or unexpected outbound connections.
    • Consider replacing or isolating the device if it cannot be promptly patched, given the unauthenticated, network-exploitable nature of this flaw.

How IONIX identifies potentially affected assets

IONIX matches the following signals against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Page title: Tenda Web Master
  • Raw response body: an anchor element with a brand class and title="Tenda"

References

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report

How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report
Close

Subscribe to Threat Center RSS

Copy/paste the link below into your preferred RSS reader or follow these instructions to subscribe to Slack alerts.

Open RSS feedSlack setup instructions

Close

Get Real-Time CVE Alerts to Your Email

Be the first to know when new zero-days emerge