What is CVE-2019-3949?

CVE-2019-3949 is a critical-severity vulnerability in Arlo Basestation Firmware, classified under CWE-16. CVSS score: 9.8/10. Published 2019-07-09.

How severe is CVE-2019-3949?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Arlo Basestation Firmware

CVE-2019-3949

Arlo Basestation firmware 1.12.0.1_27940 and prior firmware contain a networking misconfiguration that allows access to restricted network interfaces. This could allow an attacker to upload or download arbitrary files and possibly execute malicious code on the device.

Published 2019-07-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.8th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Arlo Basestation Firmware — versions 1.12.0.1_27940 and prior
Arlo Vmb3010
Arlo Vmb3010 Firmware
Arlo Vmb3500
Arlo Vmb3500 Firmware
Arlo Vmb4000
Arlo Vmb4000 Firmware
Arlo Vmb4500
Arlo Vmb4500 Firmware
Arlo Vmb5000

Weakness classification (CWE)

CWE-16

References

kb.arlo.com/000062274/Security-Advisory-for-Networking-Misconfiguration-and-Ins… (Vendor Advisory)

Frequently asked questions

What is CVE-2019-3949?: CVE-2019-3949 is a critical-severity vulnerability in Arlo Basestation Firmware, classified under CWE-16. CVSS score: 9.8/10. Published 2019-07-09.
How severe is CVE-2019-3949?: Critical severity. CVSS v3 base score is 9.8 out of 10.