{"id":"CVE-2026-16771","state":"PUBLISHED","title":"CVE-2026-16771","description":"In firmware versions 2.7.7 and earlier, the Arris BGW210‑700 gateway fails to enforce any server‑side authentication on its /cgi-bin/*.ha management endpoints, relying solely on client‑side CSS/JavaScript gating that can be bypassed by any HTTP client. This allows unauthenticated attackers on the LAN to read sensitive configuration data, modify persistent device settings, or trigger backend diagnostic operations. The issue appears systemic across the CGI handler chain.","publishedAt":"2026-07-28T18:21:40.048Z","updatedAt":"2026-07-28T19:31:06.344Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"certcc","products":["AT&T Arris BGW210‑700"],"affected":[{"vendor":"AT&T","product":"Arris BGW210‑700","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.7.7","versionType":"custom"}]}],"references":["https://kb.cert.org/vuls/id/141367","https://www.kb.cert.org/vuls/id/141367"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/16xxx/CVE-2026-16771.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16771","state":"PUBLISHED","datePublished":"2026-07-28T18:21:40.048Z","dateUpdated":"2026-07-28T19:31:06.344Z","assignerShortName":"certcc","assignerOrgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateReserved":"2026-07-23T16:36:49.550Z"},"containers":{"cna":{"title":"CVE-2026-16771","descriptions":[{"lang":"en","value":"In firmware versions 2.7.7 and earlier, the Arris BGW210‑700 gateway fails to enforce any server‑side authentication on its /cgi-bin/*.ha management endpoints, relying solely on client‑side CSS/JavaScript gating that can be bypassed by any HTTP client. This allows unauthenticated attackers on the LAN to read sensitive configuration data, modify persistent device settings, or trigger backend diagnostic operations. The issue appears systemic across the CGI handler chain."}],"affected":[{"vendor":"AT&T","product":"Arris BGW210‑700","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.7.7","versionType":"custom"}]}],"references":[{"url":"https://kb.cert.org/vuls/id/141367"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-306 Missing Authentication for Critical Function"}]}],"providerMetadata":{"shortName":"certcc","orgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateUpdated":"2026-07-28T18:21:40.048Z"},"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"VINCE 3.0.43","env":"prod","origin":"https://cveawg.mitre.org/api/cve/CVE-2026-16771"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":8.8,"attackVector":"ADJACENT_NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-28T18:58:28.079223Z","id":"CVE-2026-16771","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","type":"CWE","lang":"en","description":"CWE-306 Missing Authentication for Critical Function"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-28T18:58:56.661Z"}},{"title":"CVE Program Container","references":[{"url":"https://www.kb.cert.org/vuls/id/141367"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-07-28T19:31:06.344Z"}}]}}}