CVE Catalog
CVE-2026-19505
UnknownSummary
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.
Risk Assessment
An attacker can gain full administrative control over the system, posing a critical security threat.
Recommendation
Immediately update RDK-B WebUI and enforce proper JWT signature verification.
Original NVD description (English source)
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.