CVE-2026-25817 Command injection in n/a
Attackers with low-privilege credentials can execute arbitrary OS commands on HMS Networks Ewon and Cosy+ gateways via improper input neutralization.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-25817?
CVE-2026-25817 is a high-severity command injection vulnerability in n/a, published on 12 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
HMS Networks Ewon Flexy with firmware before 15.0s4, Cosy+ with firmware 22.xx before 22.1s6, and Cosy+ with firmware 23.xx before 23.0s3 have improper neutralization of special elements used in an OS command allowing remote code execution by attackers with low privilege access on the gateway, provided the attacker has credentials.
Weakness: CWE-94
Which versions are affected by CVE-2026-25817?
How do I fix CVE-2026-25817?
No fix has been published for CVE-2026-25817 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-25817 being exploited?
There is no known exploitation of CVE-2026-25817 in the wild and no public exploit code.
Sources
Also known as GHSA-xw8f-mr3m-9h4c.