{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-19505","assignerOrgId":"37e5125f-f79b-445b-8fad-9564f167944b","state":"PUBLISHED","assignerShortName":"certcc","dateReserved":"2026-08-10T19:13:26.432Z","datePublished":"2026-08-19T19:27:40.654Z","dateUpdated":"2026-08-27T16:10:08.424Z"},"containers":{"cna":{"title":"RDK-B WebUI improper cryptographic signature verification vulnerability","descriptions":[{"lang":"en","value":"Improper cryptographic signature verification in `jst_functions.c` in RDK-B WebUI `rdkb-2025q4-kirkstone.04.10.26` allows a remote attacker to bypass authentication and obtain administrative access via a forged JWT containing an invalid RSA signature."}],"source":{"discovery":"UNKNOWN"},"affected":[{"vendor":"RDK","product":"RDK-B WebUI","versions":[{"status":"affected","version":"rdkb-2025q4-kirkstone"}]}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-347 Improper Verification of Cryptographic Signature"}]}],"references":[{"url":"https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/"},{"url":"https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/"}],"x_generator":{"engine":"VINCE 3.0.44","env":"prod","origin":"https://cveawg.mitre.org/api/cve/CVE-2026-19505"},"providerMetadata":{"orgId":"37e5125f-f79b-445b-8fad-9564f167944b","shortName":"certcc","dateUpdated":"2026-08-19T19:27:40.654Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-347","lang":"en","description":"CWE-347 Improper Verification of Cryptographic Signature"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/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":"2026-08-27T16:10:04.555156Z","id":"CVE-2026-19505","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-27T16:10:08.424Z"}}]}}