CVE-2026-6483 Details
Description
A vulnerability was found in Wavlink WL-WN530H4 20220721. This vulnerability affects the function strcat/snprintf of the file /cgi-bin/internet.cgi. The manipulation results in os command injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 2026.04.16 is able to resolve this issue. Upgrading the affected component is recommended.
A critical OS command injection vulnerability exists in the Wavlink WN530H4 router, specifically in the firmware version WN530H4-WAVLINK_20220721. The issue arises in the '/cgi-bin/internet.cgi' file, within the 'set_add_routing' function, which handles HTTP POST parameters for static routing. User-supplied data is directly appended to a shell command using 'strcat()' and 'snprintf()' without proper sanitization, allowing authenticated attackers to inject arbitrary commands. This vulnerability, which can be exploited remotely, has been publicly disclosed and is present in other Wavlink models as well.
Users are advised to upgrade to Wavlink WN530H4 firmware version 2026.04.16, available for download from the Wavlink Firmware Download page.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 17, 2026CISA-ADP
Assessed Apr 17, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://dl.wavlink.com/firmware/RD/root_uImage_WN530H4-A_2026.04.16.bin | [email protected] | Broken LinkVendor |
| https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/vuldb_submission_report.md | [email protected] | ExploitTechnical Description |
| https://vuldb.com/submit/783055 | [email protected] | ExploitTechnical Description |
| https://vuldb.com/vuln/358021 | [email protected] | AdvisoryExploitRemedy |
| https://vuldb.com/vuln/358021/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Wavlink WL-WN530H4 | WN530H4-WAVLINK_20220721 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 17, 2026 | New CVE Received | [email protected] |