PT-2026-20333 · Wavlink · Wavlink Wl-Nu516U1

Haimianbaobao · Published 2026-02-17 · Updated 2026-02-22 · CVE-2026-2615

Positive Technologies (AI Summary)

CVSS v2.0

8.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Wavlink WL-NU516U1 versions up to 20251208

Description A flaw exists in Wavlink WL-NU516U1 that could allow for remote command injection. The issue is located in the singlePortForwardDelete function within the /cgi-bin/firewall.cgi file. Manipulation of the del flag argument can trigger the issue. The exploit has been published.

Recommendations Versions up to 20251208 should be updated when a fix becomes available. As a temporary workaround, consider restricting access to the /cgi-bin/firewall.cgi file.

Exploit

Fix

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77

CWE-74

Related Identifiers

CVE-2026-2615

Affected Products

Wavlink Wl-Nu516U1

References · 12

• 🔥 https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/singlePortForwardDelete.md · Exploit
• 🔥 https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/singlePortForwardDelete.md#exp · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-2615 · Security Note
• https://osv.dev/vulnerability/CVE-2026-2615 · Vendor Advisory
• https://vuldb.com/?id.346265 · Note
• https://vuldb.com/?submit.751047 · Note
• https://twitter.com/VulmonFeeds/status/2023751948227215834 · Twitter Post
• https://twitter.com/CVEnew/status/2023760674271490218 · Twitter Post
• https://t.me/CVEtracker/44870 · Telegram Post
• https://vuldb.com/?ctiid.346265 · Note
• https://twitter.com/cracbot/status/2025526028404420958 · Twitter Post
• https://t.me/cveNotify/152159 · Telegram Post