How severe is CVE-2019-3950?

CVE-2019-3950 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-2019-3950 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-3950?

CVE-2019-3950 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-2019-3950?

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-2019-3950 published?

CVE-2019-3950 was published on 2019-07-09 and last updated on 2026-06-17.

CVE-2019-3950

CVE-2019-3950 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-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
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 contain a hardcoded username and password combination that allows root access to the device when an onboard serial interface is connected to.

Frequently asked questions

What is CVE-2019-3950?: 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.
How severe is CVE-2019-3950?: CVE-2019-3950 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-2019-3950 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-3950?: CVE-2019-3950 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-2019-3950?: 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-2019-3950 published?: CVE-2019-3950 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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