CVE-2026-18587
HighCVSS 7.5Exploitation Probability (EPSS)
Elevated risk67th percentile - higher than 67% of all known CVEs
Summary
In the Wavlink WL-NU516U1 (version 708c073-mt7628), the config import function does not sanitize the Password argument, allowing remote OS command injection. The attack is complex but an exploit has been published.
Risk Assessment
A remote attacker can execute arbitrary commands on the device, leading to full compromise.
Recommendation
Update the device firmware to the latest version provided by the vendor.
Other vulnerabilities in Wavlink WL-NU516U1
See all- CVE-2026-18589Critical
In Wavlink WL-NU516U1 (version 708c073-mt7628), the change_password function in nas.cgi has a stack-based buffer overflow via the User1Passwd argument. The attack can be executed remotely, and the exploit is publicly available.
- CVE-2026-18588Critical
In Wavlink WL-NU516U1 (version 708c073-mt7628), the fgets function in nas.cgi has a stack-based buffer overflow via the CONTENT_LENGTH argument. Remote exploitation is possible.
- CVE-2026-18590Medium
A vulnerability was determined in Wavlink WL-NU516U1 708c073-mt7628. Affected is the function set_sys_adm of the file adm.cgi of the component Admin Password Handler. This manipulation causes OS command injection. The attack is possible remotely and the exploit has been publicly disclosed. The vendor released a fixed version.
- CVE-2026-15513Medium
A security flaw was discovered in Wavlink WL-NU516U1 version 260515. The function wlink_uci_set_value in the file /cgi-bin/adm.cgi allows remote OS command injection via manipulation of the lan_ip argument. The exploit has been publicly released and may be used in attacks.
Original NVD description (English source)
A flaw has been found in Wavlink WL-NU516U1 708c073-mt7628. The impacted element is an unknown function of the component Config Import. Executing a manipulation of the argument Password can lead to os command injection. The attack may be launched remotely. This attack is characterized by high complexity. The exploitability is regarded as difficult. The exploit has been published and may be used. It is advisable to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.