{"apiVersion":"1.0","identifier":"CVE-2026-73673","description":"Netis NC63 router firmware V3.0.0.3327 contains an unauthenticated firmware update vulnerability that allows unauthenticated attackers to submit unsigned firmware images by exploiting a missing authentication enforcement flaw in the Boa web server and netis.cgi CGI dispatcher. Attackers can send a multipart POST request to /cgi-bin/upload_fw.cgi without a valid session cookie, bypassing authentication because Boa grants access to any path containing -.cgi- regardless of cookie validation, and netis.cgi reads but does not enforce the authentication state before invoking the firmware update handler, which accepts images validated only by a forgeable additive checksum and static product strings rather than a cryptographic signature, potentially enabling persistent router compromise.","publishedAt":"2026-08-14T13:19:09","lastModifiedAt":"2026-08-14T16:17:00","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73673","cvssScore":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00511,"riskScore":0.92,"affectedProduct":"Netis NC63","affectedVersions":"==3.0.0.3327","vulnerabilityType":"Firmware","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-73673","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-73673","en":"https://www.redsauce.net/en/cves/CVE-2026-73673","fr":"https://www.redsauce.net/fr/cves/CVE-2026-73673","pt":"https://www.redsauce.net/pt/cves/CVE-2026-73673","de":"https://www.redsauce.net/de/cves/CVE-2026-73673","sk":"https://www.redsauce.net/sk/cves/CVE-2026-73673","el":"https://www.redsauce.net/el/cves/CVE-2026-73673"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-73673"}}