CVE-2026-18900 H3C NX15 Backend RPC esps file.exec os command injection
Remote attackers can execute arbitrary OS commands via the file.exec RPC function in H3C NX15 devices, potentially compromising the system.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18900?
CVE-2026-18900 is a high-severity command injection vulnerability in H3C NX15, published on 5 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A weakness has been identified in H3C NX15 V100R017. This impacts the function file.exec of the file /api/esps of the component Backend RPC. This manipulation of the argument File causes os command injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
Which versions are affected by CVE-2026-18900?
How do I fix CVE-2026-18900?
No fix has been published for CVE-2026-18900 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-2026-18900 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18900 exists.
Sources
Also known as GHSA-4hjf-4f6f-fghm.