Quick answers
- Is CVE-2026-33000 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-33000 being exploited in the wild.
- How severe is CVE-2026-33000?
- Critical severity, with a CVSS score of 9.1, published 22 May 2026.
- Which products and versions are affected?
- Ubiquiti UniFi OS.
- Is there a fix for CVE-2026-33000?
- 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-2026-33000 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-33000?
- Check whether you run Ubiquiti UniFi OS. 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
An improper input validation vulnerability (CWE-20) exists in Ubiquiti UniFi OS devices. The flaw allows a remote attacker with high-level administrative privileges to bypass input filters and inject arbitrary commands into the system shell. The vulnerability is reachable via the network and does not require user interaction. Successful exploitation results in a complete compromise of the device's integrity, confidentiality, and availability, with the potential for impact to extend beyond the affected component to the wider network environment (Scope: Changed).
Affected products
- Ubiquiti UniFi OS
Timeline
- 2026-05-22: advisory: NVD publication date