CVE-2026-7690: wavlink wl-wn570ha1_firmware Injection

Vulnerability summary

CVE-2026-7690 is a critical (CVSS 9.8) Injection vulnerability in wavlink wl-wn570ha1_firmware. EPSS estimates a 5.99% chance of exploitation in the next 30 days, higher than 93.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 03-05-2026
   PublishedVulnerability first disclosed.
2. 04-05-2026
   Last modifiedVulnerability information updated.

Description

A weakness has been identified in Wavlink WL-WN570HA1 R70HA1 V1410_221110. This issue affects the function set_sys_adm of the file /cgi-bin/adm.cgi. This manipulation of the argument Username causes command injection. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Once again the vendors acted very professional and confirms, "that the WN570HA1 firmware version R70HA1 V1410_221110 has been removed from our website." This vulnerability only affects products that are no longer supported by the maintainer.

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.