CVE-2026-4253 Details
Description
A security flaw has been discovered in Tenda AC8 16.03.50.11. This affects the function route_set_user_policy_rule of the file /cgi-bin/UploadCfg of the component Web Interface. The manipulation of the argument wans.policy.list1 results in os command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.
A stored OS command injection vulnerability has been identified in the Tenda AC8 router running firmware version 16.03.50.11. This vulnerability resides in the web interface, specifically within the '/cgi-bin/UploadCfg' file. The issue arises in the 'route_set_user_policy_rule' function, where the 'wans.policy.list1' argument is manipulated, leading to unauthorized command execution on the device's operating system. The vulnerability can be exploited remotely, and an exploit is publicly available.
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 Mar 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_cmdi_config_upload.py | [email protected] | Exploit |
| https://vuldb.com/?ctiid.351211 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.351211 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.771771 | [email protected] | ExploitThird Party AdvisoryVDB Entry |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda ac8 firmware | 16.03.50.11 |
CPE
Remediation
| |
| tenda ac8 | 5.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Mar 20, 2026 | Initial Analysis | [email protected] |
| Mar 16, 2026 | New CVE Received | [email protected] |