# CVE-2026-34911: Ubiquiti UniFi OS path traversal

Source: https://junglewise.ai/threats/cve-2026-34911-ubiquiti-unifi-os-path-traversal  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-22. Updated: 2026-05-22  
License: CC BY 4.0 with a link back

CVE-2026-34911 · Severity: high · CVSS 7.7 · Published 2026-05-22

A security vulnerability has been identified in Ubiquiti UniFi OS, the operating system used to manage UniFi networking and security devices. An attacker with low-level access to the network could bypass security restrictions to view sensitive system files. This could lead to the exposure of confidential information, potentially allowing for further unauthorized access to the network infrastructure.

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

## Quick answers

**Is CVE-2026-34911 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34911 being exploited in the wild.

**How severe is CVE-2026-34911?** High severity, with a CVSS score of 7.7, published 22 May 2026.

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

**Is there a fix for CVE-2026-34911?** 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-2026-34911 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-34911?** 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

A path traversal vulnerability (CWE-22) exists in Ubiquiti UniFi OS devices. The flaw allows an authenticated attacker with low privileges to use specially crafted input to navigate outside of intended directories on the underlying file system. By exploiting this, a network-based attacker can read sensitive system files. The vulnerability has been assigned a CVSS v3.1 score of 7.7, noting a scope change (S:C) which indicates the impact extends beyond the immediate software component to the underlying operating system. Users are advised to refer to Ubiquiti security advisory bulletin 064 for remediation steps.

## Affected products

- Ubiquiti UniFi OS

## Timeline

- 2026-05-22: advisory: NVD publication date

## References

- [https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b](https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b)

## 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)