SEPTEMBER 17, 2026
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Case File

CVE-2026-77540

CRITICAL · CVSS 9.1 EPSS 0.81% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-26 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

A critical vulnerability in UniFi OS Server allows an attacker with network access and high privileges to exploit improper input validation, potentially leading to command injection on the host device. This could enable the execution of arbitrary commands, compromising the integrity and security of the system. Organizations using UniFi OS Server should prioritize immediate remediation to mitigate the risk of exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-77540
Severity
CRITICAL
CVSS
9.1
EPSS
0.81%

Original NVD Description

A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS Server to execute a Command Injection on the host device.