CVE-2020-8144

HIGH
8.4
CVSS Score
Published: April 1, 2020 at 10:20 PM UTC
Updated: June 17, 2026 at 03:25 AM UTC
1 product affected across 1 vendorUnifi Video· also runs on 1 platform

Using UniFi Video Controller (for Windows 7/8/10 x64) by N/A?

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Severity
HIGH8.4
Exploit prediction
EPSS 0.7%

Description

The UniFi Video Server v3.9.3 and prior (for Windows 7/8/10 x64) web interface Firmware Update functionality, under certain circumstances, does not validate firmware download destinations to ensure they are within the intended destination directory tree. It accepts a request with a URL to firmware update information. If the version field contains ..\ character sequences, the destination file path to save the firmware can be manipulated to be outside the intended destination directory tree. Fixed in UniFi Video Controller v3.10.3 and newer.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 3.9.3
Vendor states this is fixed in 3.10.3 (unaffected)
microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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