CVE-2026-34910: CWE-20 Improper Input Validation in Ubiquiti Inc UniFi OS Server
A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-34910) in Ubiquiti Inc's UniFi OS Server is caused by improper input validation, enabling an unauthenticated attacker on the network to perform command injection. The vulnerability is rated critical with a CVSS 3.1 base score of 10.0, reflecting its high impact on confidentiality, integrity, and availability. The affected version is explicitly stated as version 0. There is no vendor advisory or patch information provided, and no known exploits in the wild have been reported at this time.
Potential Impact
Successful exploitation allows an attacker with network access to execute arbitrary commands on the UniFi OS Server, potentially leading to full system compromise, data loss, and service disruption. The vulnerability impacts confidentiality, integrity, and availability at the highest level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to UniFi OS Server devices and monitor for suspicious activity related to command injection attempts.
CVE-2026-34910: CWE-20 Improper Input Validation in Ubiquiti Inc UniFi OS Server
Observed in the wild — via OffSeq Mirage
Description
A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.
CVSS v3.1
Score 10.0critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-34910) in Ubiquiti Inc's UniFi OS Server is caused by improper input validation, enabling an unauthenticated attacker on the network to perform command injection. The vulnerability is rated critical with a CVSS 3.1 base score of 10.0, reflecting its high impact on confidentiality, integrity, and availability. The affected version is explicitly stated as version 0. There is no vendor advisory or patch information provided, and no known exploits in the wild have been reported at this time.
Potential Impact
Successful exploitation allows an attacker with network access to execute arbitrary commands on the UniFi OS Server, potentially leading to full system compromise, data loss, and service disruption. The vulnerability impacts confidentiality, integrity, and availability at the highest level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to UniFi OS Server devices and monitor for suspicious activity related to command injection attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-03-31T15:00:06.521Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0fb18ae1370fbb487050df
Added to database: 05/22/2026, 01:29:46 UTC
Last enriched: 06/24/2026, 14:20:24 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 163
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.