CVE-2026-109813 Shared Hard-coded Root CA Private Key
An attacker with adjacent network access can exploit a hard-coded root CA private key to compromise the confidentiality and integrity of communications in Moxa industrial devices.
- 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-2026-109813?
CVE-2026-109813 is a high-severity vulnerability in Moxa AIG-302 Series, published on 16 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A hard-coded cryptographic key vulnerability exists in the `/usr/bin/sysman` of some of Moxa's industrial computing products. An unauthenticated attacker with adjacent network access could exploit the exposed private key material to compromise the confidentiality and integrity of communications.
Weakness: CWE-321
Which versions are affected by CVE-2026-109813?
How do I fix CVE-2026-109813?
No fix has been published for CVE-2026-109813 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-109813 being exploited?
There is no known exploitation of CVE-2026-109813 in the wild and no public exploit code.
Sources
Also known as GHSA-4w88-hm3w-rh83.