CVE-2026-2565

MEDIUM

Wavlink WL-NU516U1 20251208 - Buffer Overflow

Title source: llm
STIX 2.1

Description

A weakness has been identified in Wavlink WL-NU516U1 20251208. Affected by this issue is the function sub_40785C of the file /cgi-bin/adm.cgi. This manipulation of the argument time_zone causes stack-based buffer overflow. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitation is known to be difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

References (4)

Core 4
Core References
Permissions Required, VDB Entry vdb-entry technical-description
https://vuldb.com/?id.346172
Permissions Required, VDB Entry signature permissions-required
https://vuldb.com/?ctiid.346172
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.751133

Scores

CVSS v3 6.6
EPSS 0.0005
EPSS Percentile 15.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-121 CWE-119
Status published
Products (1)
wavlink/wl-nu516u1_firmware < 2025-12-08
Published Feb 16, 2026
Tracked Since Feb 18, 2026