Quick answers
- Is CVE-2026-77537 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-77537 being exploited in the wild.
- How severe is CVE-2026-77537?
- Critical severity, with a CVSS score of 10, published 26 August 2026.
- Which products and versions are affected?
- Ubiquiti UniFi Protect.
- Is there a fix for CVE-2026-77537?
- 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-2026-77537 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-77537?
- 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 is a command injection flaw arising from improper input validation in the UniFi Protect application. The vulnerability can be exploited by a network-adjacent attacker without authentication to inject and execute arbitrary operating system commands on the host device. The attack requires no user interaction and succeeds because user-supplied input is not properly sanitized before being passed to shell execution functions. Successful exploitation grants the attacker complete control over the host device, including read/write access to surveillance data, system configuration, and potential lateral movement within the network.
Affected products
- Ubiquiti UniFi Protect
Timeline
- 2026-08-26: disclosed