CVE-2025-14655: ac20 Buffer Overflow — Exploit

Description

A security flaw has been discovered in Tenda AC20 16.03.08.12. The impacted element is the function formSetRebootTimer of the file /goform/SetSysAutoRebbotCfg of the component httpd. Performing a manipulation of the argument rebootTime results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.

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CVSS v3.1 Score

8.8

HIGH

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

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-121 CWE-121

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
tenda	ac20_firmware	All
tenda	ac20	All

References

Exploits

https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN13/AC20_SetSysAutoRebbotCfg.md

Other References

https://vuldb.com/?ctiid.336388 https://vuldb.com/?id.336388 https://vuldb.com/?submit.712910 https://www.tenda.com.cn/

Frequently Asked Questions

What is CVE-2025-14655? +

A security flaw has been discovered in Tenda AC20 16.03.08.12. The impacted element is the function formSetRebootTimer of the file /goform/SetSysAutoRebbotCfg of the component httpd. Performing a manipulation of the argument rebootTime results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-14655? +

CVE-2025-14655 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-14655? +

CVE-2025-14655 affects products from tenda, specifically: ac20, ac20_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-14655? +

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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