PT-2026-23855 · Wavlink · Wavlink Wl-Nu516U1

Allanp0E + 1 · CVE-2026-3661 · Published 2026-02-14 · Updated 2026-03-10

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Wavlink WL-NU516U1 version 240425

Description A flaw exists in the ota new upgrade function of the /cgi-bin/adm.cgi file. Manipulation of the model argument can lead to command injection. This allows for remote attacks. The exploit has been published.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Special Elements Injection

Command Injection

Weakness Enumeration

CWE-74

CWE-77

Related Identifiers

BDU:2026-09617

CVE-2026-3661

Affected Products

Wavlink Wl-Nu516U1

References · 13

• 🔥 https://github.com/jinhao118/cve/blob/main/WAVLINK_1.md · Exploit
• https://bdu.fstec.ru/vul/2026-09617 · Security Note
• https://osv.dev/vulnerability/CVE-2026-3661 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3661 · Security Note
• https://twitter.com/cyberbivash/status/2030317813349421388 · Twitter Post
• https://vuldb.com/?id.349550 · Note
• https://vuldb.com/?submit.758227 · Note
• https://t.me/cveNotify/154587 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2030293743778087175 · Twitter Post
• https://t.me/cveNotify/154932 · Telegram Post
• https://t.me/CVEtracker/46722 · Telegram Post
• https://twitter.com/CVEnew/status/2030339319601459337 · Twitter Post
• https://vuldb.com/?ctiid.349550 · Note