CVEvulnerability

CVE-2026-19505

9.8 CRITICAL Published 2026-08-19 Modified 2026-09-03 Official page ↗

Status: Awaiting Analysis
Published: 2026-08-19
Last modified: 2026-09-03
Assigner: [email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses: CWE-347

Description

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.

Weakness · CWE (1)

CWE-347 Improper Verification of Cryptographic Signature weakness

References

https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/ developer.rdkcentral.com
https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/ whitehats.pwr.edu.pl

CVE-2026-19505

Description

Related

Weakness · CWE (1)

References