CVE-2026-5526 Details
Description
A security flaw has been discovered in Tenda 4G03 Pro up to 1.0/1.1/04.03.01.53/192.168.0.1. Affected by this vulnerability is an unknown functionality of the file /bin/httpd. The manipulation results in improper access controls. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks.
An authentication bypass vulnerability has been identified in the Tenda 4G03 Pro router, affecting versions through 1.0, 1.1, and 04.03.01.53. The issue arises in the router's HTTP server component, specifically in the file '/bin/httpd'. This vulnerability allows remote attackers to bypass authentication and access sensitive management endpoints, including one that enables OS command injection and another that exposes VPN tunnel configuration.
It is recommended to implement restrictive firewall rules to block unauthorized access to the vulnerable endpoints.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://vuldb.com/submit/782052 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/355279 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/355279/cti | [email protected] | Permissions RequiredVDB Entry |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-266 | Incorrect Privilege Assignment | [email protected] |
| CWE-284 | Improper Access Control | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda 4g03 pro firmware | 04.03.01.53 |
CPE
Remediation
| |
| tenda 4g03 pro | 1.0 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 30, 2026 | Initial Analysis | [email protected] |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Apr 4, 2026 | New CVE Received | [email protected] |