CVE-2026-19506: high-severity vulnerability in RDK-B WebUI
RDK-B WebUI race condition vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 0.5%
Race condition in `check.jst` in RDK-B WebUI `rdkb-2025q4-kirkstone.04.10.26` allows a remote attacker to gain unauthorized access via concurrent authentication requests that exploit shared authentication state.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
RDK · RDK-B WebUIRelated CVEs — RDK-B WebUI
In the same product, most dangerous first.
CVE-2026-19508CRITICALRDK WebUI heap-based buffer overflow vulnerabilityEPSS 1.0%CVE-2026-19507HIGHRDK WebUI uncontrolled resource consumptionEPSS 0.6%CVE-2026-19505CRITICALRDK-B WebUI improper cryptographic signature verification vulnerabilityEPSS 0.5%CVE-2026-19509MEDIUMRDK WebUI DOS vulnerabilityEPSS 0.4%