CVE-2026-19507 RDK WebUI uncontrolled resource consumption
Remote unauthenticated attackers can cause denial of service in RDK-B WebUI by sending excessively large password values.
- 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-2026-19507?
CVE-2026-19507 is a high-severity denial of service 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
Uncontrolled resource consumption in `check.jst` in RDK-B WebUI `rdkb-2025q4-kirkstone.04.10.26` allows a remote unauthenticated attacker to cause denial of service via excessively large password values.
Weakness: CWE-400
Which versions are affected by CVE-2026-19507?
How do I fix CVE-2026-19507?
No fix has been published for CVE-2026-19507 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-19507 being exploited?
There is no known exploitation of CVE-2026-19507 in the wild and no public exploit code.
Sources
Also known as GHSA-qp83-xrr8-j73f.