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Public proof of concept

CVE-2026-3612

A public proof of concept exists; no exploitation attested.

  • Published2026-03-06
  • WeaknessCWE-74 · CWE-77

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was determined in Wavlink WL-NU516U1 V240425. This affects the function sub_405AF4 of the file /cgi-bin/adm.cgi of the component OTA Online Upgrade. This manipulation of the argument firmware_url causes command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

Timeline

dates in UTC
  1. 2026-03-0601:15CVE publishedNVD

Versions per branch

NVD
Wavlink wl-nu516u1 firmwareversion to verify
BranchAffectedFixed in
—= m16u1_v240425no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Wavlink WL-NU516U1
    Affected
    • = V240425no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-03-06

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2026-03-09
  • CNACVSS 4.07.3known since 2026-10-23
  • CNACVSS 3.17.2known since 2026-10-23
  • CNACVSS 2.08.3known since 2026-10-23
  • CNAweakness (CWE)CWE-74, CWE-77known since 2026-10-23
  • FIRST EPSSEPSS score14.3 %read 2026-11-09
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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
Published
2026-03-06
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-r3pp-rgp6-46vg

Frequently asked questions

What is CVE-2026-3612?

A vulnerability was determined in Wavlink WL-NU516U1 V240425. This affects the function sub_405AF4 of the file /cgi-bin/adm.cgi of the component OTA Online Upgrade. This manipulation of the argument firmware_url causes command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

Is CVE-2026-3612 actively exploited?

A proof-of-concept exploit exists for CVE-2026-3612, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-3612?

CVE-2026-3612 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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