CVE-2026-77535: CWE-20 Improper input validation in Ubiquiti Inc UniFi Network Application
Description
CVE-2026-77535 is a critical vulnerability in Ubiquiti Inc's UniFi Network Application involving improper input validation. A malicious actor with network access and high privileges can exploit this flaw to perform command injection on an adopted device. The vulnerability has a high CVSS score of 9.1, indicating severe impact on confidentiality, integrity, and availability. No specific affected versions or patches have been provided yet, and there are no known exploits in the wild at this time.
CVSS v3.1
Score 9.1critical
Affected software
Ubiquiti Inc
UniFi Network Application
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-77535) arises from improper input validation (CWE-20) in the UniFi Network Application by Ubiquiti Inc. An attacker with high privileges and network access could exploit this to execute arbitrary commands on an adopted device, potentially compromising the device and network. The CVSS v3.1 score of 9.1 reflects critical severity with network attack vector, low attack complexity, and no user interaction required. The vulnerability is published but no remediation level or patch information is currently available. The affected versions are not explicitly stated.
Potential Impact
Successful exploitation allows an attacker with high privileges on the network to execute arbitrary commands on an adopted device, leading to full compromise of confidentiality, integrity, and availability of the affected device and potentially the broader network environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch or official fix is available, restrict network access to trusted administrators only and monitor for unusual activity. Follow vendor updates closely for any released patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Ubiquiti
- Date Reserved
- 2026-08-20T20:32:30.112Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8eb76eacd9273b49b07eb3
Added to database: 08/26/2026, 09:52:46 UTC
Last enriched: 09/09/2026, 19:07:44 UTC
Last updated: 10/09/2026, 06:48:19 UTC
Views: 73
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