CVE-2026-38819 Denial of service in openNDS
Unauthenticated attackers can exhaust device memory via multiple leaks in openNDS, causing denial of service on captive portal networks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-38819?
CVE-2026-38819 is a medium-severity denial of service vulnerability in openNDS, published on 28 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Multiple memory leaks in openNDS before 11.0.0 allow an unauthenticated attacker on the captive portal network to exhaust all available memory on the device within minutes.
Weakness: CWE-401
Which versions are affected by CVE-2026-38819?
How do I fix CVE-2026-38819?
No fix has been published for CVE-2026-38819 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-2026-38819 being exploited?
There is no known exploitation of CVE-2026-38819 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-38819, GHSA-53cw-ggrv-83hg, UBUNTU-CVE-2026-38819.