CVE-2026-2565Wavlink WL-NU516U1 adm.cgi sub_40785C stack-based overflow
Updated under an hour ago ()
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It affects Wavlink WL-NU516U1. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.6 MEDIUM (v3.1, CNA)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
- Weakness (CWE)
- CWE-121, CWE-119
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Analyzed
- Record last updated
- Feb 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Wavlink WL-NU516U1 wavlink:wl-nu516u1_firmware | 20251208 | CNA record |
wavlink wl-nu516u1_firmware wavlink:wl-nu516u1_firmware | through 2025-12-08 | NVD |
References
- https://vuldb.com/?id.346172vdb-entry, technical-description, third-party-advisory
- https://vuldb.com/?ctiid.346172signature, permissions-required, vdb-entry
- https://vuldb.com/?submit.751133third-party-advisory, vdb-entry
- https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/time_zone.mdexploit, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.