CVE-2026-3703

HIGH EPSS 52.5%
Published Mar 8, 20263mo ago · Modified Jun 17, 20261w ago
8.9 CVSS 4.0
High
Find Similar
Published Mar 8, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

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 Details

Base Score
8.9
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
52.5% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 2

VendorProductVersionRange
wavlinkwl-nu516u1_firmware251208any
wavlinkwl-nu516u1*any

References 6

  • dl.wavlink.com https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-02-27-2fcf6ae-mt7628-squashfs-sysupgrade.bin
    Broken Link
  • github.com https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/ipaddr.md
    ExploitVendor Advisory
  • github.com https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/ipaddr.md#exp-exploit--poc
    ExploitVendor Advisory
  • vuldb.com https://vuldb.com/?ctiid.349649
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.349649
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.759226
    Third Party AdvisoryVDB Entry

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.