CVE-2026-18607
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk36th percentile - higher than 36% of all known CVEs
Summary
A security vulnerability has been detected in Wavlink WN572, WN570H, WN573, WN529, WN530, WN531, WN535, WN536, WN551, WN557 and NU516 up to 20260609. The function strcpy in upload.cgi of the lighttpd component mishandles the HTTP_COOKIE argument, leading to a stack-based buffer overflow. The attack can be initiated remotely and the exploit has been publicly disclosed.
Risk Assessment
A remote attacker can gain control of the device by executing arbitrary code in the context of the lighttpd service. This could lead to data confidentiality and integrity breaches and further propagation of the attack within the local network.
Recommendation
Immediately update the firmware of affected Wavlink devices to the latest available version that fixes this vulnerability. If no update is available, restrict access to the device's management interface to trusted networks only.
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Original NVD description (English source)
A security vulnerability has been detected in Wavlink WN572, WN570H, WN573, WN529, WN530, WN531, WN535, etc. WN529, WN530, WN531, WN535, WN536, WN551, WN557 and NU516 up to 20260609. Affected by this issue is the function strcpy of the file upload.cgi of the component lighttpd. The manipulation of the argument HTTP_COOKIE leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

