# CVE-2026-47369: Ubiquiti UniFi OS privilege escalation via improper input validation

Source: https://junglewise.ai/threats/cve-2026-47369-ubiquiti-unifi-os-privilege-escalation-via-improper-input  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-12. Updated: 2026-06-12  
License: CC BY 4.0 with a link back

CVE-2026-47369 · Severity: critical · CVSS 9.9 · Published 2026-06-12

Ubiquiti UniFi OS, which manages networking hardware like routers and access points, contains a security flaw that allows a user with low-level access to gain full administrative control. An attacker already on the network could exploit this to bypass security restrictions, potentially leading to full system takeover or unauthorized access to sensitive network traffic. This poses a significant risk to the integrity and privacy of the managed network environment.

Technologies: [Ubiquiti UniFi OS](https://junglewise.ai/threats/technologies/unifi-os). Vendors: [Ubiquiti](https://junglewise.ai/threats/vendors/ubiquiti).

## Quick answers

**Is CVE-2026-47369 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47369 being exploited in the wild.

**How severe is CVE-2026-47369?** Critical severity, with a CVSS score of 9.9, published 12 June 2026.

**Which products and versions are affected?** Ubiquiti UniFi OS.

**Is there a fix for CVE-2026-47369?** 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-2026-47369 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-47369?** 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 certain versions of Ubiquiti UniFi OS. The flaw allows an authenticated attacker with low-level privileges to submit specially crafted input that the system fails to properly sanitize, leading to a privilege escalation. The attack is network-reachable and requires no user interaction. Because the CVSS vector includes a Scope change (S:C), the impact may extend beyond the UniFi OS instance itself to the underlying host or managed devices. A fix is referenced in Ubiquiti Security Advisory Bulletin 065.

## Affected products

- Ubiquiti UniFi OS

## Timeline

- 2026-06-12: disclosed
- 2026-06-12: advisory

## References

- [https://community.ui.com/releases/Security-Advisory-Bulletin-065-065/aa46a22b-fc43-4eae-9382-6fc8feda967a](https://community.ui.com/releases/Security-Advisory-Bulletin-065-065/aa46a22b-fc43-4eae-9382-6fc8feda967a)

## Related threats

- [Ubiquiti UniFi OS CRLF injection authentication bypass](https://junglewise.ai/threats/cve-2026-77550-ubiquiti-unifi-os-crlf-injection-authentication-bypass)
- [Ubiquiti UniFi OS CRLF injection authentication bypass](https://junglewise.ai/threats/cve-2026-77549-ubiquiti-unifi-os-crlf-injection-authentication-bypass)
- [Ubiquiti UniFi OS active debug code privilege escalation](https://junglewise.ai/threats/cve-2026-77545-ubiquiti-unifi-os-active-debug-code-privilege-escalation)
- [Ubiquiti UniFi OS command injection vulnerability](https://junglewise.ai/threats/cve-2026-77540-ubiquiti-unifi-os-command-injection-vulnerability)
- [Ubiquiti UniFi OS command injection in input validation](https://junglewise.ai/threats/cve-2026-77539-ubiquiti-unifi-os-command-injection-in-input-validation)