Vulnerability-Lookup

JVNDB-2026-000046

Vulnerability from jvndb - Published: 2026-03-27 08:18 - Updated:2026-03-27 08:18

Severity

8.8 (High) - cvssV3_0 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

Multiple vulnerabilities in BUFFALO Wi-Fi routers

Details

Wi-Fi router products provided by BUFFALO INC. contain multiple vulnerabilities listed below.

Dependency on vulnerable third-party component (CWE-1395) - This issue is caused by a vulnerability in mini_httpd (CVE-2015-1548).
OS command injection (CWE-78) - CVE-2026-27650
Code injection (CWE-94) - CVE-2026-32669
Authentication bypass using an alternate path or channel (CWE-288) - CVE-2026-32678
Hidden functionality (CWE-912) - CVE-2026-33280
Missing authentication for critical function (CWE-306) - CVE-2026-33366

CVE-2015-1548 Justus W. Perlwitz of JWP Consulting reported this vulnerability to BUFFALO INC. and coordinated. After the coordination was completed, BUFFALO INC. reported the case to JPCERT/CC to notify users of the solution through JVN. CVE-2026-27650 Toshitsugu Yoneyama of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership. CVE-2026-32669 Koji Ando and KIRISHIKI Yudai of National Institute of Information and Communications Technology reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership. CVE-2026-32678, CVE-2026-33280, CVE-2026-33366 Chuya Hayakawa of 00One, Inc. reported these vulnerabilities to JPCERT/CC. JPCERT/CC coordinated with the developer.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN83788689/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-27650
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-32669
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-32678
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-33280
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-33366
	OS Command Injection(CWE-78)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html
	No Mapping(CWE-Other)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

BUFFALO INC.

Multiple BUFFALO Wi-Fi router products

Show details on JVN DB website

JSON

To clipboard

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  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000046.html",
  "dc:date": "2026-03-27T17:18+09:00",
  "dcterms:issued": "2026-03-27T17:18+09:00",
  "dcterms:modified": "2026-03-27T17:18+09:00",
  "description": "Wi-Fi router products provided by BUFFALO INC. contain multiple vulnerabilities listed below.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/1395.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\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/94.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003ca href=\u0027https://cwe.mitre.org/data/definitions/288.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003ca href=\u0027http://cwe.mitre.org/data/definitions/912.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003ca href=\u0027https://cwe.mitre.org/data/definitions/306.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eDependency on vulnerable third-party component (CWE-1395) - This issue is caused by a vulnerability in mini_httpd (CVE-2015-1548).\u003c/li\u003e\u003cli\u003eOS command injection (CWE-78) - CVE-2026-27650\u003c/li\u003e\u003cli\u003eCode injection (CWE-94) - CVE-2026-32669\u003c/li\u003e\u003cli\u003eAuthentication bypass using an alternate path or channel (CWE-288) - CVE-2026-32678\u003c/li\u003e\u003cli\u003eHidden functionality (CWE-912) - CVE-2026-33280\u003c/li\u003e\u003cli\u003eMissing authentication for critical function (CWE-306) - CVE-2026-33366\u003c/li\u003e\u003c/ul\u003eCVE-2015-1548\r\nJustus W. Perlwitz of JWP Consulting reported this vulnerability to BUFFALO INC. and coordinated.\r\nAfter the coordination was completed, BUFFALO INC. reported the case to JPCERT/CC to notify users of the solution through JVN.\r\n\r\nCVE-2026-27650\r\nToshitsugu Yoneyama of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.\r\nJPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.\r\n\r\nCVE-2026-32669\r\nKoji Ando and KIRISHIKI Yudai of National Institute of Information and Communications Technology reported this vulnerability to IPA.\r\nJPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.\r\n\r\nCVE-2026-32678, CVE-2026-33280, CVE-2026-33366\r\nChuya Hayakawa of 00One, Inc. reported these vulnerabilities to JPCERT/CC. JPCERT/CC coordinated with the developer.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000046.html",
  "sec:cpe": {
    "#text": "cpe:/o:buffalo_inc:buffalo_wi-fi_router",
    "@product": "Multiple BUFFALO Wi-Fi router products",
    "@vendor": "BUFFALO INC.",
    "@version": "2.2"
  },
  "sec:cvss": {
    "@score": "8.8",
    "@severity": "High",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "@version": "3.0"
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  "sec:identifier": "JVNDB-2026-000046",
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      "@id": "CVE-2026-33280",
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    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-33366",
      "@id": "CVE-2026-33366",
      "@source": "CVE"
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      "@id": "CWE-78",
      "@title": "OS Command Injection(CWE-78)"
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      "@id": "CWE-Other",
      "@title": "No Mapping(CWE-Other)"
    }
  ],
  "title": "Multiple vulnerabilities in BUFFALO Wi-Fi routers"
}

CVE-2026-27650 (GCVE-0-2026-27650)

Vulnerability from cvelistv5 – Published: 2026-03-27 05:24 – Updated: 2026-03-27 19:58

Summary

OS Command Injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary OS command may be executed on the products.

Severity

8.8 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

8.6 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 19:58 UTC

CWE

CWE-78 - Improper neutralization of special elements used in an OS command ('OS Command Injection')

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://www.buffalo.jp/news/detail/20260323-01.html
https://jvn.jp/en/jp/JVN83788689/

Impacted products

1 product

Vendor	Product	Version
BUFFALO INC.	BUFFALO Wi-Fi router products	Affected: See "References" section

Show details on NVD website

JSON

To clipboard

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CVE-2026-32669 (GCVE-0-2026-32669)

Vulnerability from cvelistv5 – Published: 2026-03-27 05:24 – Updated: 2026-03-27 19:52

Summary

Code injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary code may be executed on the products.

Severity

8.8 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 19:52 UTC

CWE

CWE-94 - Code injection

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://www.buffalo.jp/news/detail/20260323-01.html
https://jvn.jp/en/jp/JVN83788689/

Impacted products

1 product

Vendor	Product	Version
BUFFALO INC.	BUFFALO Wi-Fi router products	Affected: See "References" section

Show details on NVD website

JSON

To clipboard

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CVE-2026-32678 (GCVE-0-2026-32678)

Vulnerability from cvelistv5 – Published: 2026-03-27 05:25 – Updated: 2026-03-27 19:53

Summary

Authentication bypass issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to alter critical configuration settings without authentication.

Severity

7.5 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 19:53 UTC

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://www.buffalo.jp/news/detail/20260323-01.html
https://jvn.jp/en/jp/JVN83788689/

Impacted products

1 product

Vendor	Product	Version
BUFFALO INC.	BUFFALO Wi-Fi router products	Affected: See "References" section

Show details on NVD website

JSON

To clipboard

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CVE-2026-33280 (GCVE-0-2026-33280)

Vulnerability from cvelistv5 – Published: 2026-03-27 05:25 – Updated: 2026-03-27 19:54

Summary

Hidden functionality issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to gain access to the product’s debugging functionality, resulting in the execution of arbitrary OS commands.

Severity

7.2 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

8.6 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 19:53 UTC

CWE

CWE-912 - Hidden functionality

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://www.buffalo.jp/news/detail/20260323-01.html
https://jvn.jp/en/jp/JVN83788689/

Impacted products

1 product

Vendor	Product	Version
BUFFALO INC.	BUFFALO Wi-Fi router products	Affected: See "References" section

Show details on NVD website

JSON

To clipboard

{
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CVE-2026-33366 (GCVE-0-2026-33366)

Vulnerability from cvelistv5 – Published: 2026-03-27 05:25 – Updated: 2026-03-27 19:37

Summary

Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.

Severity

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 19:37 UTC

CWE

CWE-306 - Missing authentication for critical function

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://www.buffalo.jp/news/detail/20260323-01.html
https://jvn.jp/en/jp/JVN83788689/

Impacted products

1 product

Vendor	Product	Version
BUFFALO INC.	BUFFALO Wi-Fi router products	Affected: See "References" section

Show details on NVD website

JSON

To clipboard

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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Tags

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Nomenclature

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