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9.4
CVE-2026-86151: Tenda CP3 allows remote command injection
CVE-2026-86151 · published 1 month ago
Summary
The CP3 router’s network configuration component can be tricked into running system commands when a specially crafted request is sent over the network. An attacker could use this to take control of the device from anywhere. Apply the latest firmware update from Tenda as soon as possible to fix the issue.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| tenda | cp3 | 27.5.57.101 |
Original advisory text
Tenda CP3 Network Configuration Management system.c sub_2F77E8 os command injection
A vulnerability was detected in Tenda CP3 27.5.57.101. The affected element is the function sub_2F77E8 of the file Apis/system.c of the component Network Configuration Management. Performing a manipulation results in os command injection. The attack may be initiated remotely.
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker full control
Severity
9.4
Critical
Type
CWE-78OS Command Injection
CWE-77Command Injection
Timeline
Published6 Sep 2026
Updated3 Oct 2026
First seen5 Sep 2026
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