{"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": "2026-08-19T19:27:40.654Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"product": "RDK-B WebUI", "vendor": "RDK", "versions": [{"status": "affected", "version": "rdkb-2025q4-kirkstone"}]}], "source": "cret@cert.org"}], "cveTags": [], "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."}], "id": "CVE-2026-19505", "lastModified": "2026-08-19T20:17:14.150", "metrics": {}, "published": "2026-08-19T20:17:14.150", "references": [{"source": "cret@cert.org", "url": "https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/"}, {"source": "cret@cert.org", "url": "https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "rdkb-2025q4-kirkstone"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "RDK-B WebUI", "source": "cna", "vendor": "RDK"}, "product": "rdk-b_webui", "vendor": "rdk"}], "created": "2026-08-19T23:30:17.089931+00:00", "updated": "2026-08-20T09:08:36.871067+00:00", "vendors": ["rdk", "rdk$PRODUCT$rdk-b_webui"], "weaknesses": ["CWE-287"]}