CVE-2026-18812 H3C NX15 esps esps.ipv6.wan command injection
Remote attackers can execute arbitrary commands on H3C NX15 routers via the esps.ipv6.wan API endpoint.
- 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-2026-18812?
CVE-2026-18812 is a high-severity command injection vulnerability in H3C NX15, published on 4 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A flaw has been found in H3C NX15 V100R017. The impacted element is the function esps.ipv6.wan of the file /api/esps. Executing a manipulation of the argument workMode can lead to command injection. It is possible to launch the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.
Which versions are affected by CVE-2026-18812?
How do I fix CVE-2026-18812?
No fix has been published for CVE-2026-18812 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-2026-18812 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18812 exists.
Sources
Also known as GHSA-xg9q-jwhp-4c98.