CVE-2026-8259

Description

A vulnerability has been found in Tenda AC6 2.0/15.03.06.23. The affected element is an unknown function of the file /goform/telnet of the component httpd. The manipulation of the argument lan.ip leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.

CVSS v3.1 Score

4.7

MEDIUM

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

EPSS — Exploit Prediction

0.0037

Probability of exploitation

0.59%

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-77 CWE-77

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
tenda	ac6_firmware	All
tenda	ac6	All

References

Exploits

https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/Tenda%20AC6V2%20TendaTelnet%20Command%20Injection.md

Other References

https://vuldb.com/submit/809877 https://vuldb.com/vuln/362556 https://vuldb.com/vuln/362556/cti https://www.tenda.com.cn/

Frequently Asked Questions

What is CVE-2026-8259? +

A vulnerability has been found in Tenda AC6 2.0/15.03.06.23. The affected element is an unknown function of the file /goform/telnet of the component httpd. The manipulation of the argument lan.ip leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2026-8259? +

CVE-2026-8259 has a CVSS v3.1 score of 4.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0037, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-8259? +

CVE-2026-8259 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-2026-8259? +

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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