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CVE-2026-8191

📛 CVE Title

Wavlink NU516U1 adm.cgi wifi_region os command injection

⬇ Download JSON ⚠ View as Threat

Description

A vulnerability was identified in Wavlink NU516U1 M16U1_V240425. This affects the function wifi_region of the file /cgi-bin/adm.cgi. Such manipulation of the argument skiplist1/skiplist2 leads to os command injection. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

Overview

State
PUBLISHED
Assigner (CNA)
VulDB
CVSS severity
MEDIUM
CVSS score
CVSS 5.3 / 10 5.3 5.3 / 10
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Effective score
5.3 / 10 MEDIUM source: CNA overview
CWE(s)
CWE-78, CWE-77
Reserved
2026-05-08
Published
2026-05-09 20:15 UTC
Last updated
2026-05-12 04:25 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/8xxx/CVE-2026-8191.json
Linked Threat
CVE-2026-8191 — CVE-2026-8191

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-05-09 19:16:09 UTC
NVD last modified
2026-05-13 16:10:09 UTC
NVD CVSS v3.1
CVSS 6.3 / 10 6.3 6.3 / 10 MEDIUM source: cna@vuldb.com
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Exploitability subscore
2.8 / 10
Impact subscore
3.4 / 10
EPSS score
0.0009 (probability of exploitation in next 30 days)
EPSS percentile
24.97% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD / KEV / EPSS data refreshed 2026-05-25 06:21 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-28919
Assigner
VulDB
Published
May 9, 2026, 6:15:10 PM
Updated
May 12, 2026, 2:25:52 AM
EUVD base score (CVSS 4.0)
5.3 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EUVD-reported EPSS
0.0900
Vendors
WAVLINK
Products
NU516U1 (M16U1_V240425)
Aliases
GHSA-h4pj-rg5x-h3wx

ENISA description: A vulnerability was identified in Wavlink NU516U1 M16U1_V240425. This affects the function wifi_region of the file /cgi-bin/adm.cgi. Such manipulation of the argument skiplist1/skiplist2 leads to os command injection. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

EUVD references (4)

Affected products (1)
VendorProductVersionsPlatforms
Wavlink NU516U1 M16U1_V240425 (affected) —

Affected products — CPE 2.3 (2) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

  • cpe:2.3:o:wavlink:wl-nu516u1_firmware:m16u1_v240425:*:*:*:*:*:*:*
  • cpe:2.3:h:wavlink:wl-nu516u1:-:*:*:*:*:*:*:*

Vendor references (4)

References embedded in the original CVE record by the assigning CNA.

MITRE references (4) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

Web references (3)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

NVD-tagged references (4)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Remediations (20)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

  • CISA Warns of Exploited Microsoft Defender 0-Day Flaws
    web:cyberpress.org

    The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two actively exploited Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, issuing an urgent remediation directive for federal agencies with a due date of June 3, 2026 .

    2026-05-23 21:04 UTC
  • CISA Warns of Microsoft Defender 0-Day Vulnerabilities Exploited in Attacks
    web:cybersecuritynews.com

    The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two critical Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, warning organizations of active exploitation risks. The flaws, tracked as CVE - 2026 -45498 and CVE - 2026 -41091, impact Microsoft Defender and could allow attackers to disrupt systems or escalate privileges. Both ...

    2026-05-23 21:04 UTC
  • Patch Tuesday, May 2026 Edition - Krebs on Security
    web:krebsonsecurity.com

    Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.

    2026-05-23 21:04 UTC
  • Security Update Guide - Microsoft
    web:portal.msrc.microsoft.com

    The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

    2026-05-23 21:04 UTC
  • Microsoft Patches Two Actively Exploited Defender Zero-Days on Windows
    web:windowsreport.com

    Microsoft patched two actively exploited Defender zero-days affecting Windows systems and security components.

    2026-05-23 21:04 UTC
  • Microsoft February 2026 Patch Tuesday fixes 6 zero-days, 58 flaws
    web:www.bleepingcomputer.com

    Today is Microsoft's February 2026 Patch Tuesday with security updates for 58 flaws, including 6 actively exploited and three publicly disclosed zero-day vulnerabilities.

    2026-05-23 21:04 UTC
  • Microsoft warns of new Defender zero-days exploited in attacks
    web:www.bleepingcomputer.com

    On Wednesday, Microsoft started rolling out security patches for two Defender vulnerabilities that have been exploited in zero-day attacks.

    2026-05-23 21:04 UTC
  • 2 New Microsoft Defender Zero-Days Exploited—Patch Now ... - Forbes
    web:www.forbes.com

    Microsoft has confirmed an emergency security update as CISA warns that two new Defender zero-days are being exploited by attackers.

    2026-05-23 21:04 UTC
  • Security Update Guide FAQs - microsoft.com
    web:www.microsoft.com

    These Knowledge Base articles accompany all security updates and advisories, and include caveats or known issues with security updates. Additionally, support engineers document common concerns from customers in these KB articles. These Knowledge Base articles are published the Security Update Guide with each release on Patch Tuesday.

    2026-05-23 21:04 UTC
  • Microsoft's February 2026 Patch Tuesday: Six Zero-Days, 58 flaws ...
    web:www.secpod.com

    The second Tuesday of the month has arrived, bringing another significant wave of Microsoft security updates. In February 2026 , Microsoft issued patches for 58 vulnerabilities, including six actively exploited zero-day flaws and five rated Critical. As part of this month's release, Microsoft has also begun rolling out updated Secure Boot certificates ahead of the June 2026 expiration of the ...

    2026-05-23 21:04 UTC
  • Pennsylvania Access To Criminal History - Home
    web:epatch.pa.gov

    Why does PATCH exist? Its purpose is to better enable the public to obtain criminal history record checks. The repository was created and is maintained in accordance with Pennsylvania's Criminal History Information Act contained in Chapter 91 of Title 18, Crimes Code. This Act also directs the Pennsylvania State Police (PSP) to disseminate criminal history data to criminal justice agencies ...

    2026-05-26 02:49 UTC
  • NVD - Home
    web:nvd.nist.gov

    CVE - 2026 -23262 - In the Linux kernel, the following vulnerability has been resolved: gve: Fix stats report corruption on queue count change The driver and the NIC share a region in memory for stats reporting.

    2026-05-26 02:49 UTC
  • The Official Fix Chocolate Bar | Dubai's Viral Chocolate Bars
    web:officialfixdessertchocolatier.com

    Indulge in Dubai's viral chocolate bars with FIX Dessert Chocolatier. Shop our hero collection featuring Baklawa, Knafeh, Biscoff, and more. Fast delivery in Dubai & Abu Dhabi. Order now!

    2026-05-26 02:49 UTC
  • Huntington News, Breaking News in Huntington, NY - Patch
    web:patch.com

    Huntington Latest Headlines: New Family-Owned Butcher Shop + Italian Sushi + $61M Downtown Project; 🌱 Patch AM: Which big-name acts are hitting Huntington and Jones Beach this summer?; Best Buy ...

    2026-05-26 02:49 UTC
  • patch.moe - Age Verification
    web:patch.moe

    Age Verification Are you 18 years or older? YES NO

    2026-05-26 02:49 UTC
  • Patch - patch
    web:patchnashville.com

    Patch was born out of a love of children's fashion and classic yet modern gifting. The goal was to create a timeless yet modern boutique with a playful touch featuring children's clothing, gifts, & accessories. My hope is that you always find what you came for and feel as inspired by our collections as we are.

    2026-05-26 02:49 UTC
  • Addressing Exchange Server May 2026 vulnerability CVE-2026-42897
    web:techcommunity.microsoft.com

    Known issues when mitigation is applied We are aware of following known issues once CVE - 2026 -42897 mitigation is applied (using either option above): OWA Print Calendar functionality might not work. As a workaround copy the data or screenshot the calendar you want to print or use Outlook Desktop client.

    2026-05-26 02:49 UTC
  • Microsoft April 2026 Patch Tuesday fixes 167 flaws, 2 zero-days
    web:www.bleepingcomputer.com

    Today is Microsoft's April 2026 Patch Tuesday with security updates for 167 flaws, including 2 zero-day vulnerabilities.

    2026-05-26 02:49 UTC
  • May 2026 Patch Tuesday: Updates and Analysis | CrowdStrike
    web:www.crowdstrike.com

    Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.

    2026-05-26 02:49 UTC
  • CVE: Common Vulnerabilities and Exposures
    web:www.cve.org

    At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures

    2026-05-26 02:49 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-8191.json.

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "content": {
                "id": "CVE-2026-8191",
                "options": [
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                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-12T02:25:39.864299Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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        {
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          "versions": [
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            }
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      "credits": [
        {
          "lang": "en",
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          "name": "Submit #800730 | Wavlink NU516U1 M16U1_V240425 Command Injection",
          "tags": [
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          "value": "VulDB entry last update"
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    "dateReserved": "2026-05-08T19:52:11.621Z",
    "dateUpdated": "2026-05-12T02:25:52.944Z",
    "state": "PUBLISHED"
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}