How severe is CVE-2019-3949?

CVE-2019-3949 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-3949 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-3949?

CVE-2019-3949 primarily affects Arlo Vmb3010 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-3949?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-3949 published?

CVE-2019-3949 was published on 2019-07-09 and last updated on 2026-06-17.

CVE-2019-3949

CVE-2019-3949 is a critical-severity vulnerability in Arlo Vmb3010 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-16.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-16
Affected product: Arlo Vmb3010 Firmware
Published: 2019-07-09
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2019-3949?: CVE-2019-3949 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-3949 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-3949?: CVE-2019-3949 primarily affects Arlo Vmb3010 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-3949?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-3949 published?: CVE-2019-3949 was published on 2019-07-09 and last updated on 2026-06-17.

References

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

Affected products (5)

cpe:2.3:o:arlo:vmb3010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arlo:vmb4000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arlo:vmb3500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arlo:vmb4500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arlo:vmb5000_firmware:*:*:*:*:*:*:*:*

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