CVE-2026-109109 (GCVE-0-2026-109109)

Vulnerability from cvelistv5 – Published: 2026-10-13 07:45 – Updated: 2026-10-13 07:45
VLAI
Title
Wavlink WL-WN530BE1-A Settings Export CGI ExportAllSettings.cgi strcpy stack-based overflow
Summary
A vulnerability was detected in Wavlink WL-WN530BE1-A 251117. This vulnerability affects the function strcpy of the file /cgi-bin/ExportAllSettings.cgi of the component Settings Export CGI. Performing a manipulation of the argument HTTP_COOKIE/X-Cmd results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure.
Severity
10 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C
10 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3876 records in the last 180 days details
References
URL Tags
https://vuldb.com/vuln/416860 vdb-entrytechnical-description
https://vuldb.com/vuln/416860/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-109109 third-party-advisory
https://vuldb.com/submit/909191 third-party-advisory
https://gist.github.com/Rauzk/9ef4fe7574e5689386c… broken-linkexploit
Impacted products
Vendor Product Version CPE status
Wavlink WL-WN530BE1-A Affected: 251117
    cpe:2.3:a:wavlink:wl-wn530be1-a:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Tarbely (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:wavlink:wl-wn530be1-a:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Settings Export CGI"
          ],
          "product": "WL-WN530BE1-A",
          "vendor": "Wavlink",
          "versions": [
            {
              "status": "affected",
              "version": "251117"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Tarbely (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was detected in Wavlink WL-WN530BE1-A 251117. This vulnerability affects the function strcpy of the file /cgi-bin/ExportAllSettings.cgi of the component Settings Export CGI. Performing a manipulation of the argument HTTP_COOKIE/X-Cmd results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 10,
            "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-13T07:45:17.295Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-416860 | Wavlink WL-WN530BE1-A Settings Export CGI ExportAllSettings.cgi strcpy stack-based overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/416860"
        },
        {
          "name": "VDB-416860 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/416860/cti"
        },
        {
          "name": "CVE-2026-109109 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-109109"
        },
        {
          "name": "Submit #909191 | Wavlink WL-WN530BE1-A M30BE1_V251117 Stack-based Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/909191"
        },
        {
          "tags": [
            "broken-link",
            "exploit"
          ],
          "url": "https://gist.github.com/Rauzk/9ef4fe7574e5689386cc43139f4cf9e1"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-10-12T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-10-12T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-10-12T10:38:15.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Wavlink WL-WN530BE1-A Settings Export CGI ExportAllSettings.cgi strcpy stack-based overflow",
      "x_generator": [
        "VulDB PVTS v202610"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-109109",
    "datePublished": "2026-10-13T07:45:17.295Z",
    "dateReserved": "2026-10-12T08:32:57.687Z",
    "dateUpdated": "2026-10-13T07:45:17.295Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-109109",
      "date": "2026-10-13",
      "epss": "0.00584",
      "percentile": "0.4644"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "cpes": [
                  "cpe:2.3:a:wavlink:wl-wn530be1-a:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Settings Export CGI"
                ],
                "product": "WL-WN530BE1-A",
                "vendor": "Wavlink",
                "versions": [
                  {
                    "status": "affected",
                    "version": "251117"
                  }
                ]
              }
            ],
            "source": "cna@vuldb.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A vulnerability was detected in Wavlink WL-WN530BE1-A 251117. This vulnerability affects the function strcpy of the file /cgi-bin/ExportAllSettings.cgi of the component Settings Export CGI. Performing a manipulation of the argument HTTP_COOKIE/X-Cmd results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure."
          }
        ],
        "id": "CVE-2026-109109",
        "lastModified": "2026-10-13T13:29:12.567",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 10.0,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "cna@vuldb.com",
              "type": "Secondary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 10.0,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 6.0,
              "source": "cna@vuldb.com",
              "type": "Primary"
            }
          ],
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 9.3,
                "baseSeverity": "CRITICAL",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "PROOF_OF_CONCEPT",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "HIGH",
                "subConfidentialityImpact": "HIGH",
                "subIntegrityImpact": "HIGH",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "cna@vuldb.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-13T08:17:00.110",
        "references": [
          {
            "source": "cna@vuldb.com",
            "url": "https://gist.github.com/Rauzk/9ef4fe7574e5689386cc43139f4cf9e1"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/cve/CVE-2026-109109"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/submit/909191"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/vuln/416860"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/vuln/416860/cti"
          }
        ],
        "sourceIdentifier": "cna@vuldb.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-119"
              },
              {
                "lang": "en",
                "value": "CWE-121"
              }
            ],
            "source": "cna@vuldb.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.