CVE-2025-57296: ac6 Command Injection — Exploit

Description

Tenda AC6 router firmware 15.03.05.19 contains a command injection vulnerability in the formSetIptv function, which processes requests to the /goform/SetIPTVCfg web interface. When handling the list and vlanId parameters, the sub_ADBC0 helper function concatenates these user-supplied values into nvram set system commands using doSystemCmd, without validating or sanitizing special characters (e.g., ;, ", #). An unauthenticated or authenticated attacker can exploit this by submitting a crafted POST request, leading to arbitrary system command execution on the affected device.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness Type (CWE)

CWE-77 CWE-77

Affected Products

Vendor	Product	Versions
tenda	ac6_firmware	All
tenda	ac6	All

References

Exploits

https://github.com/ZZ2266/.github.io/blob/main/Tenda/readme.md https://github.com/ZZ2266/.github.io/tree/main/Tenda

Other References

https://tenda.com.cn/material/show/2681

Frequently Asked Questions

What is CVE-2025-57296? +

Tenda AC6 router firmware 15.03.05.19 contains a command injection vulnerability in the formSetIptv function, which processes requests to the /goform/SetIPTVCfg web interface. When handling the list and vlanId parameters, the sub_ADBC0 helper function concatenates these user-supplied values into nvram set system commands using doSystemCmd, without validating or sanitizing special characters (e.g., ;, ", #). An unauthenticated or authenticated attacker can exploit this by submitting a crafted POST request, leading to arbitrary system command execution on the affected device. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-57296? +

CVE-2025-57296 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-57296? +

CVE-2025-57296 affects products from tenda, specifically: ac6, ac6_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-57296? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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