CVE intelligence and bounded remediation
CVE-2020-8157 — Ui Unifi Cloud Key Gen2 Firmware security vulnerability
High
CVSS 7.2
UniFi Cloud Key firmware <= v1.1.10 for Cloud Key gen2 and Cloud Key gen2 Plus contains a vulnerability that allows unrestricted root access through the serial interface (UART).
- Severity
- High
- CVSS
- 7.2 (2.0)
- Published
- 2020-05-02
- CISA KEV
- Not currently listed
- Ecosystem
- operating-system
- Weaknesses
- CWE-284
Affected products
- ui / unifi_cloud_key_gen2_firmware
- ui / unifi_cloud_key_gen2_plus_firmware
Matched remediation archetype
Authorization bypass, IDOR, and cross-tenant access
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
- Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
- Use synthetic fixtures to compare intended access matrices without accessing another user's real data.
Remediate safely
- Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
- Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
- Add deny-by-default policy tests for horizontal and vertical access across every affected transport.
Authoritative sources
Complete CVE record and remediation plan
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