# CVE-2026-86149: Tenda CP3 OS command injection via interface_name argument

Source: https://junglewise.ai/threats/cve-2026-86149-tenda-cp3-os-command-injection-via-interface-name-argument  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-05. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-86149 · Severity: critical · CVSS 9.1 · Published 2026-09-05

Tenda CP3 is a network management device used for monitoring and control of network infrastructure. A remote attacker can inject arbitrary OS commands through the interface_name/host parameter in the network ping functionality, allowing complete system compromise without requiring authentication.

Technologies: [Tenda CP3](https://junglewise.ai/threats/technologies/cp3). Vendors: [Tenda](https://junglewise.ai/threats/vendors/tenda).

## Quick answers

**Is CVE-2026-86149 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-86149 being exploited in the wild.

**How severe is CVE-2026-86149?** Critical severity, with a CVSS score of 9.1, published 5 September 2026.

**Which products and versions are affected?** Tenda CP3 27.5.57.101.

**Is there a fix for CVE-2026-86149?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-86149 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-86149?** Check whether you run Tenda CP3 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability is a classic OS command injection flaw in the NetCheckPing.cpp component of Tenda CP3. The vulnerable code fails to properly sanitize the interface_name or host parameter before passing it to system commands, allowing an attacker to concatenate shell metacharacters and arbitrary commands. The attack is network-accessible and requires no prior authentication or user interaction. Successful exploitation allows remote code execution with the privileges of the affected service, typically enabling full system takeover. A patch or upgrade is recommended; check Tenda's official security advisories for available updates.

## Affected products

- Tenda CP3 27.5.57.101

## Timeline

- 2026-09-05: disclosed

## References

- [https://vuldb.com/cve/CVE-2026-86149](https://vuldb.com/cve/CVE-2026-86149)
- [https://vuldb.com/submit/895350](https://vuldb.com/submit/895350)

## Related threats

- [Tenda CP3 privilege escalation in redirect server](https://junglewise.ai/threats/cve-2026-86153-tenda-cp3-privilege-escalation-in-redirect-server)
- [Tenda CP3 OS command injection in AutoAddWifi](https://junglewise.ai/threats/cve-2026-86152-tenda-cp3-os-command-injection-in-autoaddwifi)
- [Tenda CP3 OS command injection in Network Configuration Management](https://junglewise.ai/threats/cve-2026-86151-tenda-cp3-os-command-injection-in-network-configuration)
- [Tenda CP3 hard-coded credentials in hostapd configuration](https://junglewise.ai/threats/cve-2026-86150-tenda-cp3-hard-coded-credentials-in-hostapd-configuration)
- [Tenda CP3 OS command injection in SystemAsh](https://junglewise.ai/threats/cve-2026-86148-tenda-cp3-os-command-injection-in-systemash)