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Vulnerability · Published Jun 29, 2026 · Assigned by VulDB

CVE-2026-13538Wavlink WL-NU516U1-A POST Parameter wireless.cgi sub_401D68 command injection

Medium 6.3

In plain English

A medium-severity command injection in WL-NU516U1-A from Wavlink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 82% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)2.2%top 17.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in Wavlink WL-NU516U1-A M16U1_V240425. The affected element is the function sub_401D68 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. This manipulation of the argument SSID2G2/SSID5G2/AuthMethod2/WPAPSK12 causes command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Affected products (as reported)

VendorProductVersions
Wavlink WL-NU516U1-A M16U1_V240425

Weakness: CWE-77, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

References