Quick answers
- Is CVE-2026-18812 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18812 being exploited in the wild.
- How severe is CVE-2026-18812?
- High severity, with a CVSS score of 7.2, published 4 August 2026.
- Which products and versions are affected?
- H3C NX15 V100R017.
- Is there a fix for CVE-2026-18812?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-18812 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-18812?
- Check whether you run H3C NX15 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a command injection flaw in the esps.ipv6.wan function of the /api/esps endpoint in H3C NX15 V100R017. The vulnerability exists because user-supplied input in the workMode parameter is not properly sanitized before being passed to a system command execution context. An attacker can reach this endpoint remotely without authentication and inject arbitrary OS commands by crafting a malicious workMode value, leading to remote code execution with system privileges. Patches or vendor mitigations have been disclosed to the vendor.
Affected products
- H3C NX15 V100R017
Timeline
- 2026-08-04: disclosed: Exploit published and public