CVE-2026-3703A flaw has been found in Wavlink NU516U1 251208.
Updated under an hour ago ()
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It affects wavlink wl-nu516u1_firmware. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A flaw has been found in Wavlink NU516U1 251208. This affects the function sub_401A10 of the file /cgi-bin/login.cgi. Executing a manipulation of the argument ipaddr can lead to out-of-bounds write. The attack may be performed from remote. The exploit has been published and may be used. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
- CVSS
- 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-119, CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wavlink wl-nu516u1_firmware wavlink:wl-nu516u1_firmware | 251208 | NVD |
References
- https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-02-27-2fcf6ae-mt7628-squashfs-sysupgrade.binbroken-link
- https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/ipaddr.mdexploit, vendor-advisory
- https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/ipaddr.md#exp-exploit--pocexploit, vendor-advisory
- https://vuldb.com/?ctiid.349649permissions-required, vdb-entry
- https://vuldb.com/?id.349649third-party-advisory, vdb-entry
- https://vuldb.com/?submit.759226third-party-advisory, vdb-entry
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.