CVE-2026-120238: Command Injection (CVSS 9.9)

Description

A vulnerability has been found in WAVLINK WN553X1-B 260403_2.0.0. This affects the function sub_4162A8 of the file /bin/ioos of the component ovpn_file Handler. Such manipulation of the argument file_id leads to os command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.

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CVSS v3.1 Score

9.9

CRITICAL

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

EPSS — Exploit Prediction

0.0169

Probability of exploitation

0.77%

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

References

Other References

https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK%20WN553X1-B%20Router/WAVLINK_WN553X1-B_ovpn_file_command_injection.md https://vuldb.com/cve/CVE-2026-120238 https://vuldb.com/submit/919248 https://vuldb.com/vuln/429597 https://vuldb.com/vuln/429597/cti

Frequently Asked Questions

What is CVE-2026-120238? +

A vulnerability has been found in WAVLINK WN553X1-B 260403_2.0.0. This affects the function sub_4162A8 of the file /bin/ioos of the component ovpn_file Handler. Such manipulation of the argument file_id leads to os command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure. It has a CVSS v3.1 base score of 9.9 (CRITICAL).

How severe is CVE-2026-120238? +

CVE-2026-120238 has a CVSS v3.1 score of 9.9 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0169, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-120238? +

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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