CVE-2026-3868 Denial of service in EDR-8010 Series
Unauthenticated remote attackers can cause a denial-of-service condition on Moxa Secure Routers via crafted HTTPS requests, requiring a reboot to restore service.
- 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-2026-3868?
CVE-2026-3868 is a high-severity denial of service vulnerability in Moxa EDR-8010 Series, published on 27 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An improper handling of the length parameter inconsistency vulnerability has been identified in Moxa’s Secure Router. Because of improper validation of length parameters in the HTTPS management interface, an unauthenticated remote attacker could send specially crafted requests that trigger a buffer overflow condition, causing the web service to become unresponsive. Successful exploitation may result in a denial-of-service condition requiring a device reboot to restore normal operation. While successful exploitation can severely impact the availability of the affected device, no impact to the confidentiality or integrity of the affected product has been identified. Additionally, no confidentiality, integrity, or availability impact to the subsequent system has been identified.
Weakness: CWE-130
Which versions are affected by CVE-2026-3868?
How do I fix CVE-2026-3868?
No fix has been published for CVE-2026-3868 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-2026-3868 being exploited?
There is no known exploitation of CVE-2026-3868 in the wild and no public exploit code.
Sources
Also known as GHSA-r6w8-xqq4-gmhr.