HOMEVULNERABILITIESCVE-2019-3950
CRITICAL

CVE-2019-3950

CWE-798Published: July 9, 2019· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Arlo Basestation firmware 1.12.0.1_27940 and prior contain a hardcoded username and password combination that allows root access to the device when an onboard serial interface is connected to.

NVD Source

Technical Analysis

CVE-2019-3950 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

arlo10 product(s)
vmb3010 firmwarevmb3010vmb4000 firmwarevmb4000vmb3500 firmwarevmb3500vmb4500 firmwarevmb4500vmb5000 firmwarevmb5000
Source: NVD CPE · 10 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://kb.arlo.com/000062274/Security-Advisory-for-Networking-Misconfiguration-and-Insufficient-UART-Protection-Mechanisms
ADVISORYhttps://kb.arlo.com/000062274/Security-Advisory-for-Networking-Misconfiguration-and-Insufficient-UART-Protection-Mechanisms

All References (2)

→
https://kb.arlo.com/000062274/Security-Advisory-for-Networking-Misconfiguration-and-Insufficient-UART-Protection-MechanismsVendor Advisory
→
https://kb.arlo.com/000062274/Security-Advisory-for-Networking-Misconfiguration-and-Insufficient-UART-Protection-MechanismsVendor Advisory

Quick Facts

CVE IDCVE-2019-3950
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-798
CISA KEVNo
Affected1 vendor(s)
PublishedJul 9, 2019

Related CVEs (CWE-798)

CVE-2020-6779
10.0
CVE-2026-22769
KEV10.0
CVE-2013-3542
10.0
CVE-2020-6963
10.0
CVE-2025-7503
10.0
CVE-2026-8983
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-3950 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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