CVE-2026-2565

MEDIUM 6.6

Wavlink WL-NU516U1 adm.cgi sub_40785C stack-based overflow

CVSS Score

6.6

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121 CWE-119
Vendor	wavlink
Product	wl-nu516u1
Published	Feb 16, 2026
Last Updated	Feb 23, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Wavlink / WL-NU516U1

20251208

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.346172 vuldb.com: https://vuldb.com/?ctiid.346172 vuldb.com: https://vuldb.com/?submit.751133 github.com: https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/time_zone.md

Credits

🔍 haimianbaobao (VulDB User)