CVE-2026-6483: Wavlink WL-WN530H4 internet.cgi snprintf os command injection

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-17 · updated 2026-10-25
Weakness: CWE-77

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.

Affected products

Wavlink WL-WN530H4: 20220721

References

https://dl.wavlink.com/firmware/RD/root_uImage_WN530H4-A_2026.04.16.bin
https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/vuldb_submission_report.md
https://vuldb.com/submit/783055
https://vuldb.com/vuln/358021
https://vuldb.com/vuln/358021/cti

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