CVE-2022-35520: Wavlink WN530H4 Firmware

Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days.

WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 api.cgi has no filtering on parameter ufconf, and this is a hidden parameter which doesn't appear in POST body, but exist in cgi binary. This leads to command injection in page /ledonoff.shtml.

Affected products

• Wavlink WN530H4 Firmware: affected versions not specified
• Wavlink WN531P3 Firmware: affected versions not specified
• Wavlink WN533A8 Firmware: affected versions not specified
• Wavlink WN535G3 Firmware: affected versions not specified
• Wavlink WN572HP3 Firmware: affected versions not specified

Published 2022-08-10. Last modified 2026-06-17.