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    5 vulnerabilities found for WEX-G300 by BUFFALO INC.

    JVNDB-2026-035794

    Vulnerability from jvndb - Published: 2026-09-29 04:35 - Updated:2026-09-29 04:35
    Severity
    Summary
    Multiple vulnerabilities in BUFFALO Wi-Fi Products
    Details
    The web configuration user interfaces of Wi-Fi products provided by BUFFALO INC. contain multiple vulnerabilities listed below.
    • OS command injection (CWE-78) - CVE-2026-86530
    • Stack-based buffer overflow (CWE-121) - CVE-2026-95104
    Veeti Punnonen reported these vulnerabilities to JPCERT/CC. JPCERT/CC coordinated with the developer.
    Show details on JVN DB website

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      "dc:date": "2026-09-29T13:35+09:00",
      "dcterms:issued": "2026-09-29T13:35+09:00",
      "dcterms:modified": "2026-09-29T13:35+09:00",
      "description": "The web configuration user interfaces of Wi-Fi products provided by BUFFALO INC. contain multiple vulnerabilities listed below.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/78.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003ca href=\u0027https://cwe.mitre.org/data/definitions/121.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eOS command injection (CWE-78) - CVE-2026-86530\u003c/li\u003e\u003cli\u003eStack-based buffer overflow (CWE-121) - CVE-2026-95104\u003c/li\u003e\u003c/ul\u003eVeeti Punnonen reported these vulnerabilities to JPCERT/CC.\r\nJPCERT/CC coordinated with the developer.",
      "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-035794.html",
      "sec:cpe": [
        {
          "#text": "cpe:/h:buffalo_inc:wsr-300hp",
          "@product": "WSR-300HP",
          "@vendor": "BUFFALO INC.",
          "@version": "2.2"
        },
        {
          "#text": "cpe:/o:buffalo_inc:wex-g300",
          "@product": "WEX-G300",
          "@vendor": "BUFFALO INC.",
          "@version": "2.2"
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      "sec:references": [
        {
          "#text": "https://jvn.jp/en/vu/JVNVU94863997/index.html",
          "@id": "JVNVU#94863997",
          "@source": "JVN"
        },
        {
          "#text": "https://www.cve.org/CVERecord?id=CVE-2026-86530",
          "@id": "CVE-2026-86530",
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          "@id": "CVE-2026-95104",
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        {
          "#text": "https://cwe.mitre.org/data/definitions/121.html",
          "@id": "CWE-121",
          "@title": "Stack-based Buffer Overflow(CWE-121)"
        },
        {
          "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
          "@id": "CWE-78",
          "@title": "OS Command Injection(CWE-78)"
        }
      ],
      "title": "Multiple vulnerabilities in BUFFALO Wi-Fi Products"
    }

    CVE-2026-95104 (GCVE-0-2026-95104)

    Vulnerability from nvd – Published: 2026-09-28 08:14 – Updated: 2026-09-30 13:45
    VLAI
    Summary
    Stack-based buffer overflow vulnerability exists in BUFFALO Wi-Fi products. A non-authenticated crafted HTTP request may cause a denial-of-service (DoS) condition.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-30 13:45 UTC
    CWE
    • CWE-121 - Stack-based buffer overflow
    Impacted products
    Vendor Product Version
    BUFFALO INC. WSR-300HP Affected: 0 , < Ver.2.55 (semver)
    Create a notification for this product.
    BUFFALO INC. WEX-G300 Affected: 0 , < Ver.1.71 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-86530 (GCVE-0-2026-86530)

    Vulnerability from nvd – Published: 2026-09-28 08:14 – Updated: 2026-09-30 12:33
    VLAI
    Summary
    BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings internally. An administrative user may send a crafted HTTP request and execute an arbitrary OS command.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-30 12:33 UTC
    CWE
    • CWE-78 - Improper neutralization of special elements used in an OS command ('OS Command Injection')
    Impacted products
    Vendor Product Version
    BUFFALO INC. WSR-300HP Affected: 0 , < Ver.2.55 (semver)
    Create a notification for this product.
    BUFFALO INC. WEX-G300 Affected: 0 , < Ver.1.71 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-95104 (GCVE-0-2026-95104)

    Vulnerability from cvelistv5 – Published: 2026-09-28 08:14 – Updated: 2026-09-30 13:45
    VLAI
    Summary
    Stack-based buffer overflow vulnerability exists in BUFFALO Wi-Fi products. A non-authenticated crafted HTTP request may cause a denial-of-service (DoS) condition.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-30 13:45 UTC
    CWE
    • CWE-121 - Stack-based buffer overflow
    Impacted products
    Vendor Product Version
    BUFFALO INC. WSR-300HP Affected: 0 , < Ver.2.55 (semver)
    Create a notification for this product.
    BUFFALO INC. WEX-G300 Affected: 0 , < Ver.1.71 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-86530 (GCVE-0-2026-86530)

    Vulnerability from cvelistv5 – Published: 2026-09-28 08:14 – Updated: 2026-09-30 12:33
    VLAI
    Summary
    BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings internally. An administrative user may send a crafted HTTP request and execute an arbitrary OS command.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-30 12:33 UTC
    CWE
    • CWE-78 - Improper neutralization of special elements used in an OS command ('OS Command Injection')
    Impacted products
    Vendor Product Version
    BUFFALO INC. WSR-300HP Affected: 0 , < Ver.2.55 (semver)
    Create a notification for this product.
    BUFFALO INC. WEX-G300 Affected: 0 , < Ver.1.71 (semver)
    Create a notification for this product.
    Show details on NVD website

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