CVE-2026-15513
MediumCVSS 6.3Exploitation Probability (EPSS)
Elevated risk70th percentile - higher than 70% of all known CVEs
Summary
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.
Risk Assessment
The organization is at risk of remote device takeover, potentially leading to network compromise and data breaches.
Recommendation
Immediately upgrade the Wavlink WL-NU516U1 firmware to the latest version that fixes this vulnerability.
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-2026-18587High
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.
Original NVD description (English source)
A security flaw has been discovered in Wavlink WL-NU516U1 260515. This affects the function wlink_uci_set_value of the file /cgi-bin/adm.cgi. Performing a manipulation of the argument lan_ip results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. You should 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.