Quick answers
- Is CVE-2026-18900 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18900 being exploited in the wild.
- How severe is CVE-2026-18900?
- High severity, with a CVSS score of 7.2, published 5 August 2026.
- Which products and versions are affected?
- H3C NX15 V100R017.
- Is there a fix for CVE-2026-18900?
- 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-2026-18900 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-18900?
- 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 an OS command injection flaw in the file.exec function of the /api/esps endpoint in the Backend RPC component of H3C NX15 V100R017. The vulnerability exists due to insufficient input validation of the File parameter, which is passed unsanitized to operating system command execution. The attack is remotely accessible and exploitable after authentication. A successful exploit allows an attacker to execute arbitrary OS commands with the privileges of the affected service, potentially leading to complete system compromise. Public exploit code is available.
Affected products
- H3C NX15 V100R017
Timeline
- 2026-08-05: disclosed
- other: Public exploit code made available