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CVE-2026-86530

WSR-300HP · Vulnerability

CVSS 3.1 7.2 HIGHCVSS 4.0 8.6 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-86530

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-86530

Published

WSR-300HP

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "BUFFALO INC.",
                    "product": "WSR-300HP",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "Ver.2.55"
                        }
                    ]
                }

WEX-G300

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "BUFFALO INC.",
                    "product": "WEX-G300",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "Ver.1.71"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON