# CVE-2026-86151: Tenda CP3 OS command injection in Network Configuration Management

Source: https://junglewise.ai/threats/cve-2026-86151-tenda-cp3-os-command-injection-in-network-configuration  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-06. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-86151 · Severity: critical · CVSS 9.1 · Published 2026-09-06

The Tenda CP3 network device contains a command injection vulnerability in its Network Configuration Management component that allows remote attackers to execute arbitrary operating system commands. This could enable an attacker to take full control of the device, access sensitive network data, or use it as a foothold to attack other systems on the network.

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

## Quick answers

**Is CVE-2026-86151 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-86151 being exploited in the wild.

**How severe is CVE-2026-86151?** Critical severity, with a CVSS score of 9.1, published 6 September 2026.

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

**Is there a fix for CVE-2026-86151?** 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-2026-86151 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-86151?** 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

The vulnerability exists in function sub_2F77E8 within Apis/system.c of the Tenda CP3 Network Configuration Management component. It is an OS command injection flaw that arises from insufficient input sanitization when processing network configuration parameters. The vulnerability is remotely exploitable without requiring authentication or user interaction. A successful exploit allows arbitrary command execution with device privileges, potentially leading to full system compromise, data exfiltration, or lateral movement within the network. Patches for version 27.5.57.101 should be available from Tenda.

## Affected products

- Tenda CP3 27.5.57.101

## Timeline

- 2026-09-06: disclosed

## References

- [https://vuldb.com/cve/CVE-2026-86151](https://vuldb.com/cve/CVE-2026-86151)
- [https://vuldb.com/submit/895352](https://vuldb.com/submit/895352)

## 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 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 via interface_name argument](https://junglewise.ai/threats/cve-2026-86149-tenda-cp3-os-command-injection-via-interface-name-argument)
- [Tenda CP3 OS command injection in SystemAsh](https://junglewise.ai/threats/cve-2026-86148-tenda-cp3-os-command-injection-in-systemash)