CVE-2026-13538 (GCVE-0-2026-13538)

Vulnerability from cvelistv5 – Published: 2026-06-29 05:15 – Updated: 2026-06-29 05:15
VLAI
Title
Wavlink WL-NU516U1-A POST Parameter wireless.cgi sub_401D68 command injection
Summary
A vulnerability was determined in Wavlink WL-NU516U1-A M16U1_V240425. The affected element is the function sub_401D68 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. This manipulation of the argument SSID2G2/SSID5G2/AuthMethod2/WPAPSK12 causes command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Severity
5.3 (Medium)
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
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CWE
Assigner
References
Impacted products
Vendor Product Version
Wavlink WL-NU516U1-A Affected: M16U1_V240425
    cpe:2.3:a:wavlink:wl-nu516u1-a:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
HustBinary (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:wavlink:wl-nu516u1-a:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "POST Parameter Handler"
          ],
          "product": "WL-NU516U1-A",
          "vendor": "Wavlink",
          "versions": [
            {
              "status": "affected",
              "version": "M16U1_V240425"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "HustBinary (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was determined in Wavlink WL-NU516U1-A M16U1_V240425. The affected element is the function sub_401D68 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. This manipulation of the argument SSID2G2/SSID5G2/AuthMethod2/WPAPSK12 causes command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "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",
            "version": "4.0"
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            "baseSeverity": "MEDIUM",
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            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C",
            "version": "2.0"
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      "problemTypes": [
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              "description": "Command Injection",
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              "type": "CWE"
            }
          ]
        },
        {
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              "description": "Injection",
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-29T05:15:13.662Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-374546 | Wavlink WL-NU516U1-A POST Parameter wireless.cgi sub_401D68 command injection",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/374546"
        },
        {
          "name": "VDB-374546 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/374546/cti"
        },
        {
          "name": "CVE-2026-13538 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-13538"
        },
        {
          "name": "Submit #834019 | Wavlink WL-NU516U1-A M16U1_V240425 Command Injection",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/834019"
        },
        {
          "name": "Submit #834021 | Wavlink WL-NU516U1-A M16U1_V240425 Command Injection (Duplicate)",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/834021"
        },
        {
          "name": "Submit #834022 | Wavlink WL-NU516U1-A M16U1_V240425 Command Injection (Duplicate)",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/834022"
        },
        {
          "name": "Submit #834023 | Wavlink WL-NU516U1-A M16U1_V240425 Command Injection (Duplicate)",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/834023"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://github.com/Svigo-o/Wavlink_vul/tree/main/wavlink-wl-nu516u1-wireless-multissid-ssid2g2-command-injection"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/Svigo-o/Wavlink_vul/tree/main/wavlink-wl-nu516u1-wireless-multissid-ssid5g2-command-injection"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-06-22-5ccde97-mt7628-squashfs-sysupgrade.bin"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-06-28T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-06-28T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-06-28T12:06:40.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Wavlink WL-NU516U1-A POST Parameter wireless.cgi sub_401D68 command injection"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-13538",
    "datePublished": "2026-06-29T05:15:13.662Z",
    "dateReserved": "2026-06-28T10:01:35.649Z",
    "dateUpdated": "2026-06-29T05:15:13.662Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-13538\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2026-06-29T06:16:29.040\",\"lastModified\":\"2026-06-29T06:16:29.040\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability was determined in Wavlink WL-NU516U1-A M16U1_V240425. The affected element is the function sub_401D68 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. This manipulation of the argument SSID2G2/SSID5G2/AuthMethod2/WPAPSK12 causes command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The affected component should be upgraded. 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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.