# CVE-2026-77548: Ubiquiti UniFi Protect command injection via input validation

Source: https://junglewise.ai/threats/cve-2026-77548-ubiquiti-unifi-protect-command-injection-via-input-validation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-26. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-77548 · Severity: critical · CVSS 9.9 · Published 2026-08-26

UniFi Protect is a video surveillance and access control platform used by organizations to monitor premises and secure entry points. An attacker with network access and low privileges could inject malicious commands through improper input validation, potentially gaining complete control of the host device and compromising all connected surveillance systems.

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

## Quick answers

**Is CVE-2026-77548 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-77548 being exploited in the wild.

**How severe is CVE-2026-77548?** Critical severity, with a CVSS score of 9.9, published 26 August 2026.

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

**Is there a fix for CVE-2026-77548?** 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-2026-77548 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-77548?** Check whether you run Ubiquiti UniFi Protect. 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

This vulnerability stems from improper input validation in UniFi Protect Application, allowing an unauthenticated or low-privileged network-accessible attacker to perform command injection on the host device. The vulnerability requires network access but does not require high privileges or user interaction. A successful exploit enables arbitrary command execution with the privileges of the UniFi Protect process, potentially leading to full system compromise. Patches or mitigations should be available through Ubiquiti's security advisory bulletin.

## Affected products

- Ubiquiti UniFi Protect

## Timeline

- 2026-08-26: disclosed

## References

- [https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9](https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9)

## Related threats

- [Ubiquiti UniFi Protect command injection via improper input validation](https://junglewise.ai/threats/cve-2026-77537-ubiquiti-unifi-protect-command-injection-via-improper-input)
- [Ubiquiti UniFi Protect command injection via improper input validation](https://junglewise.ai/threats/cve-2026-77533-ubiquiti-unifi-protect-command-injection-via-improper-input)
- [Ubiquiti UniFi Protect SQL injection privilege escalation](https://junglewise.ai/threats/cve-2026-56841-ubiquiti-unifi-protect-sql-injection-privilege-escalation)
- [Ubiquiti UniFi Protect auth bypass in data streaming](https://junglewise.ai/threats/cve-2026-54408-ubiquiti-unifi-protect-auth-bypass-in-data-streaming)