CVE-2025-14993: ac18 Buffer Overflow — Exploit

Description

A vulnerability was detected in Tenda AC18 15.03.05.05. This affects the function sprintf of the file /goform/SetDlnaCfg of the component HTTP Request Handler. The manipulation of the argument scanList results in stack-based buffer overflow. The attack can be executed remotely. The exploit is now public and may be used.

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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

Affected Products

Vendor	Product	Versions
tenda	ac18_firmware	All
tenda	ac18	All

References

Exploits

https://github.com/z472421519/BinaryAudit/blob/main/PoC/BOF/Tenda_AC18/SetDlnaCfg/SetDlnaCfg.md https://github.com/z472421519/BinaryAudit/blob/main/PoC/BOF/Tenda_AC18/SetDlnaCfg/SetDlnaCfg.md#reproduce

Other References

https://vuldb.com/?ctiid.337687 https://vuldb.com/?id.337687 https://vuldb.com/?submit.719084 https://www.tenda.com.cn/

Frequently Asked Questions

What is CVE-2025-14993? +

A vulnerability was detected in Tenda AC18 15.03.05.05. This affects the function sprintf of the file /goform/SetDlnaCfg of the component HTTP Request Handler. The manipulation of the argument scanList results in stack-based buffer overflow. The attack can be executed remotely. The exploit is now public and may be used. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-14993? +

CVE-2025-14993 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-2025-14993? +

CVE-2025-14993 affects products from tenda, specifically: ac18, ac18_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-14993? +

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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