CVE-2026-77542: CWE-20 Improper input validation in Ubiquiti Inc UID Enterprise Agent
Description
CVE-2026-77542 is a critical vulnerability in Ubiquiti Inc's UID Enterprise Agent involving improper input validation. An attacker with network access and high privileges could exploit this flaw to perform command injection on the host device. The vulnerability has a CVSS score of 9.1, indicating high impact on confidentiality, integrity, and availability. No patch or official remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
CVSS v3.1
Score 9.1critical
Affected software
Ubiquiti Inc
UID Enterprise Agent
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-77542) affects the UID Enterprise Agent by Ubiquiti Inc and is classified as CWE-20 (Improper Input Validation). It allows a malicious actor with network access and elevated privileges to execute arbitrary commands on the host system via command injection. The CVSS v3.1 base score is 9.1, reflecting network attack vector, low attack complexity, required high privileges, no user interaction, and complete impact on confidentiality, integrity, and availability. The vendor has published the vulnerability but has not provided a remediation level or patch information. The affected versions are not explicitly stated.
Potential Impact
Successful exploitation could lead to full compromise of the affected host, including unauthorized command execution, potentially resulting in data loss, system disruption, or further network compromise. The high CVSS score indicates severe impact on confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict network access to the UID Enterprise Agent and limit high privilege accounts to trusted users only. Monitor for unusual activity related to command execution on affected hosts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Ubiquiti
- Date Reserved
- 2026-08-20T20:32:30.113Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8ebe7dacd9273b49ba1854
Added to database: 08/26/2026, 10:22:53 UTC
Last enriched: 09/09/2026, 18:52:42 UTC
Last updated: 10/08/2026, 18:48:48 UTC
Views: 53
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