CVE-2026-2565

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-2565
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.

6.6 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.7 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:H/Au:M/C:C/I:C/A:C

Exploitability : 3.2 / Impact : 10.0

Access Vector NETWORK

Access Complexity HIGH

Authentication MULTIPLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/time_zone.md Exploit Third Party Advisory
https://vuldb.com/?ctiid.346172 Permissions Required VDB Entry
https://vuldb.com/?id.346172 Third Party Advisory VDB Entry
https://vuldb.com/?submit.751133 Third Party Advisory VDB Entry
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:wavlink:wl-nu516u1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:wavlink:wl-nu516u1:-:*:*:*:*:*:*:*
History

18 Feb 2026, 19:42

Type Values Removed Values Added
First Time Wavlink wl-nu516u1 Firmware
Wavlink wl-nu516u1
Wavlink
CPE cpe:2.3:h:wavlink:wl-nu516u1:-:*:*:*:*:*:*:*
cpe:2.3:o:wavlink:wl-nu516u1_firmware:*:*:*:*:*:*:*:*
References () https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/time_zone.md - () https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/time_zone.md - Exploit, Third Party Advisory
References () https://vuldb.com/?ctiid.346172 - () https://vuldb.com/?ctiid.346172 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.346172 - () https://vuldb.com/?id.346172 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.751133 - () https://vuldb.com/?submit.751133 - Third Party Advisory, VDB Entry

18 Feb 2026, 17:52

Type Values Removed Values Added
Summary
  • (es) Se ha identificado una debilidad en Wavlink WL-NU516U1 20251208. Afectada por este problema es la función sub_40785C del archivo /cgi-bin/adm.cgi. Esta manipulación del argumento time_zone causa desbordamiento de búfer basado en pila. El ataque puede ser iniciado remotamente. El ataque se considera que tiene alta complejidad. La explotación se sabe que es difícil. El exploit ha sido puesto a disposición del público y podría ser utilizado para ataques. El proveedor fue contactado tempranamente sobre esta divulgación pero no respondió de ninguna manera.

16 Feb 2026, 17:18

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-16 17:18

Updated : 2026-02-18 19:42

NVD link : CVE-2026-2565

Mitre link : CVE-2026-2565

CVE.ORG link : CVE-2026-2565

JSON object : View

Products Affected

wavlink

  • wl-nu516u1
  • wl-nu516u1_firmware
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow