PT-2026-39403 · Wavlink · Nu516U1

Ziyue Xie · Published 2026-05-09 · Updated 2026-05-09 · CVE-2026-8191

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Wavlink NU516U1 version M16U1 V240425

Description Remote OS command injection is possible via the 'wifi region' function within the '/cgi-bin/adm.cgi' endpoint. This occurs through the manipulation of the skiplist1 and skiplist2 arguments, allowing an attacker to execute arbitrary operating system commands remotely.

Recommendations As a temporary workaround, restrict access to the '/cgi-bin/adm.cgi' endpoint or avoid using the skiplist1 and skiplist2 arguments within the 'wifi region' function until a fix is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

OS Command Injection

Command Injection

Weakness Enumeration

CWE-78

CWE-77

Related Identifiers

CVE-2026-8191

Affected Products

Nu516U1

References · 8

• 🔥 https://github.com/wudipjq/my_vuln/blob/main/Wavlink/vuln_4/4.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-8191 · Security Note
• https://vuldb.com/vuln/362343/cti · Note
• https://vuldb.com/vuln/362343 · Note
• https://vuldb.com/submit/800730 · Note
• https://twitter.com/VulmonFeeds/status/2053208752384246038 · Twitter Post
• https://t.me/cveNotify/162878 · Telegram Post
• https://t.me/CVEtracker/53230 · Telegram Post