{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-89009",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89009",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T14:56:10.246Z",
    "updatedAt": "2026-09-15T16:20:10.541Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "WAVLINK WN535M1/WN535M3 Unauthenticated Arbitrary File Write via sync_server",
      "summary": "WAVLINK WN535M1 and WN535M3 routers running firmware prior to M35M1_V250922 contain an unauthenticated arbitrary file write vulnerability that allows remote attackers to overwrite any file on the device by sending a crafted payload to the sync_server daemon on TCP port 13136. The daemon, which runs as root and requires no authentication, accepts a 100-byte filename field in its protocol header without path canonicalization, allowing attackers to supply an absolute path and write arbitrary content to overwrite startup scripts or credential stores to achieve persistent system compromise.",
      "affected": [
        {
          "vendor": "WAVLINK Technology",
          "product": "WN535M1",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "M35M1_V210223",
              "status": "affected",
              "versionType": "custom"
            },
            {
              "version": "M35M1_V250922",
              "status": "unaffected",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "WAVLINK Technology",
          "product": "WN535M3",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "M35M1_V210223",
              "status": "affected",
              "versionType": "custom"
            },
            {
              "version": "M35M1_V250922",
              "status": "unaffected",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  }
}