CVE-2026-86153
Received Received - Intake

Improper Privilege Management in Tenda CP3 Router Firmware

Publication date: 2026-09-06

Last updated on: 2026-09-06

Assigner: VulDB

Description
A vulnerability has been found in Tenda CP3 27.5.57.101. This affects the function CRedirServer::SetRedirectEnable of the file Functions/Redirect.cpp. The manipulation leads to improper privilege management. Remote exploitation of the attack is possible.

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Meta Information

Published
2026-09-06
Last Modified
2026-09-06
Generated
2026-09-06
AI Q&A
2026-09-06
EPSS Evaluated
N/A
NVD
CVE-2026-86153
EUVD
EUVD-2026-72038

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
tenda cp3 27.5.57.101

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
CWE-266 A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

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Executive Summary

This vulnerability affects the Tenda CP3 device running firmware version 27.5.57.101. It is located in the function CRedirServer::SetRedirectEnable within the file Functions/Redirect.cpp. The issue allows improper privilege management, meaning an attacker could gain unauthorized control over system privileges remotely.

Impact Analysis

An attacker could exploit this to gain elevated privileges on the device, potentially allowing them to modify configurations, intercept network traffic, or execute arbitrary commands. This could lead to unauthorized access, data breaches, or disruption of network services.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements under GDPR (data protection) and HIPAA (health information privacy). Organizations using affected Tenda CP3 devices may face legal penalties or reputational damage if exploited.

Mitigation Strategies

Immediately update the Tenda CP3 firmware to the latest version if a patch is available. Disable unnecessary network services and restrict access to the device's management interface. Monitor network traffic for unusual activity targeting the Redirect.cpp function or related ports.

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