CVE-2026-8138

Description

A vulnerability was found in Tenda CX12L 16.03.53.12. This issue affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg”. The manipulation results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could 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

EPSS — Exploit Prediction

0.0008

Probability of exploitation

0.24%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
tenda	cx12l_firmware	All
tenda	cx12l	All

References

Exploits

https://github.com/cve-a/lvdan/issues/6

Other References

https://vuldb.com/submit/808867 https://vuldb.com/vuln/361927 https://vuldb.com/vuln/361927/cti https://www.tenda.com.cn/

Frequently Asked Questions

What is CVE-2026-8138? +

A vulnerability was found in Tenda CX12L 16.03.53.12. This issue affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg”. The manipulation results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-8138? +

CVE-2026-8138 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. The EPSS score is 0.0008, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-8138? +

CVE-2026-8138 affects products from tenda, specifically: cx12l, cx12l_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-8138? +

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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