Home Cyber Security News Serious Vulnerabilities Discovered That Affect Arlo Wireless Security Cameras

Serious Vulnerabilities Discovered That Affect Arlo Wireless Security Cameras

by Abeerah Hashim
Arlo wireless security cameras

Researchers have found some serious security vulnerabilities in Arlo wireless security cameras. These vulnerabilities could allow a potential attacker to take control of the cameras, thus threatening a victims home security.

Bugs In Arlo Wireless Security Cameras

Tenable researcher, Jimi Sebree, has discovered some serious security bugs targeting Arlo wireless security cameras. Specifically, Sebree found two different vulnerabilities that could risk a victims home security upon exploit.

As elaborated in Tenable’s advisory, the first of these include Insufficient UART Protection Mechanisms. To exploit the flaw, an attacker with physical access to the device could connect to the UART port and use default credentials to log in the account as the root user. The attacker could then execute commands and gain access to sensitive information.

With physical access, connecting to the serial port is relatively trivial as it immediately drops the user to a login prompt. While the UART credentials (UART_username and UART_passwd) are encrypted in the nvram entries, the encryption key is hardcoded on the device via the PASS_ENC (GEARNET) environment variable (which is cleared after the initial boot and nvram encryption).

The second vulnerability specifically relates to a network misconfiguration. An attacker connected to the Arlo Base Station’s LAN could access the internal camera network interface. Consequently, the attacker could then take control of the targeted Arlo camera. As stated in the advisory,

The default http listener deployed by “vzdaemon” contains a “passthru” api endpoint that allows the arbitrary download or upload of files on the device.

Tenable has identified these vulnerabilities as high-severity bugs with a CVSS base score of 8.3 and 7.2 respectively. Whereas, the CVE IDs CVE-2019-3949 and CVE-2019-3950 have been reserved for them.

Vendors Patched The Vulnerabilities

Upon finding the vulnerabilities, Tenable reported the matter to the vendors on March 11, 2019. After the continuous collaboration, the vendors patched the vulnerabilities.

The two bugs affected the Arlo Base Station models VMB3010, VMB4000, VMB3500, VMB4500 and VMB5000. The vendors have rolled-out the fixes with the latest firmware releases as confirmed in their advisory. The users of the devices must ensure updating to the following patched versions to stay protected from potential exploits.

Patch for Insufficient UART Protection Mechanisms:

  • VMB3010 and VMB4000:
  • VMB3500 and VMB4500:
  • VMB5000:

Patch for network misconfiguration:

  • VMB3010 and VMB4000:
  • VMB3500 and VMB4500:
  • VMB5000:

Let us know your thoughts in the comments.

You may also like

Do NOT follow this link or you will be banned from the site!

Privacy Preference Center


The __cfduid cookie is used to identify individual clients behind a shared IP address and apply security settings on a per-client basis.

cookie_notice_accepted and gdpr[allowed_cookies] are used to identify the choices made from the user regarding cookie consent.

For example, if a visitor is in a coffee shop where there may be several infected machines, but the specific visitor's machine is trusted (for example, because they completed a challenge within your Challenge Passage period), the cookie allows Cloudflare to identify that client and not challenge them again. It does not correspond to any user ID in your web application, and does not store any personally identifiable information.

__cfduid, cookie_notice_accepted, gdpr[allowed_cookies]


DoubleClick by Google refers to the DoubleClick Digital Marketing platform which is a separate division within Google. This is Google’s most advanced advertising tools set, which includes five interconnected platform components.

DoubleClick Campaign Manager: the ad-serving platform, called an Ad Server, that delivers ads to your customers and measures all online advertising, even across screens and channels.

DoubleClick Bid Manager – the programmatic bidding platform for bidding on high-quality ad inventory from more than 47 ad marketplaces including Google Display Network.

DoubleClick Ad Exchange: the world’s largest ad marketplace for purchasing display, video, mobile, Search and even Facebook inventory.

DoubleClick Search: is more powerful than AdWords and used for purchasing search ads across Google, Yahoo, and Bing.

DoubleClick Creative Solutions: for designing, delivering and measuring rich media (video) ads, interactive and expandable ads.



The _ga is asssociated with Google Universal Analytics - which is a significant update to Google's more commonly used analytics service. This cookie is used to distinguish unique users by assigning a randomly generated number as a client identifier. It is included in each page request in a site and used to calculate visitor, session and campaign data for the sites analytics reports. By default it is set to expire after 2 years, although this is customisable by website owners.

The _gat global object is used to create and retrieve tracker objects, from which all other methods are invoked. Therefore the methods in this list should be run only off a tracker object created using the _gat global variable. All other methods should be called using the _gaq global object for asynchronous tracking.

_gid works as a user navigates between web pages, they can use the gtag.js tagging library to record information about the page the user has seen (for example, the page's URL) in Google Analytics. The gtag.js tagging library uses HTTP Cookies to "remember" the user's previous interactions with the web pages.

_ga, _gat, _gid