CVE-2026-19506 RDK-B WebUI race condition vulnerability
Remote attackers can gain unauthorized access to RDK-B WebUI by exploiting a race condition in concurrent authentication requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19506?
CVE-2026-19506 is a high-severity vulnerability in RDK-B WebUI, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-362
Which versions are affected by CVE-2026-19506?
How do I fix CVE-2026-19506?
No fix has been published for CVE-2026-19506 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-19506 being exploited?
There is no known exploitation of CVE-2026-19506 in the wild and no public exploit code.
Sources
Also known as GHSA-gcr9-cjhj-rh79.