CVE-2026-44094 Fallback to second RAUC slot with default credentials
An unauthenticated attacker can force a fallback to a firmware slot with default credentials, gaining SSH access and potentially interrupting charging.
- 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-2026-44094?
CVE-2026-44094 is a high-severity authentication bypass vulnerability in Phoenix Contact CHARX SEC-3000, published on 30 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated remote attacker can enforce the system to fall back to a firmware partition with an insecure configuration including default credentials. This could allow the attacker to gain SSH access to the system as an unprivileged user "user-app". Charging could be interrupted.
Weakness: CWE-636
Which versions are affected by CVE-2026-44094?
How do I fix CVE-2026-44094?
No fix has been published for CVE-2026-44094 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-44094 being exploited?
There is no known exploitation of CVE-2026-44094 in the wild and no public exploit code.
Sources
Also known as GHSA-vqrq-f9p4-xrm2.