CISA Warns of Critical Vulnerabilities in NUUO and Reolink Devices

The Cybersecurity and Infrastructure Security Agency (CISA) just dropped a fresh notice that should set off alarms for anyone managing networked devices or systems. Four critical vulnerabilities have been added to CISA's Known Exploited Vulnerabilities (KEV) Catalog, and they’re not just hypothetical; real-world exploitation has been observed. In other words, bad actors are already out there using these weak spots to wreak havoc. So, grab your updates and take note—these vulnerabilities should be on your immediate radar.
Let’s break this down. What’s going on here, what do these vulnerabilities mean for you, and what can you do about it?

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The Four Culprits: CVEs Under the Spotlight​

Here are the four Common Vulnerabilities and Exposures (CVEs) CISA flagged as high-priority risks:

1. CVE-2018-14933​

Target: NUUO NVRmini Devices
Type: OS Command Injection
This vulnerability allows an attacker to execute arbitrary operating system commands on the NUUO NVRmini Digital Video Recorders (DVRs). Essentially, malicious actors could take control of these devices by exploiting gaps in how they handle commands. Since these devices are designed to manage video surveillance systems, the implications are chilling—hackers could use this access to tamper with video feeds, damage files, or eavesdrop on sensitive areas.
Some older, unsupported devices are particularly vulnerable, which ups the stakes for businesses and governments relying on outdated hardware.

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2. CVE-2022-23227​

Target: NUUO NVRmini 2 Devices
Type: Missing Authentication
Missing authentication is like leaving your digital front door wide open; hackers can walk right in. For NUUO NVRmini 2 devices, this flaw allows attackers to bypass any kind of signer verification, potentially granting them unauthorized control over network-wide operations. Consider this a nightmare scenario for environments where security cameras are mission-critical, such as airports, banks, or hospitals.

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3. CVE-2019-11001​

Target: Reolink Multiple IP Cameras
Type: OS Command Injection
Reolink's popular IP surveillance cameras are on the hit list with yet another OS Command Injection vulnerability. With this exploit, attackers can inject system-level commands via improperly sanitized inputs, thereby hijacking control of your camera's operating system. From shutting down feeds to maliciously altering camera configurations, this is a field day for cyber criminals with espionage or destructive ambitions.

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4. CVE-2021-40407​

Target: Reolink RLC-410W IP Cameras
Type: OS Command Injection
Yet another Reolink issue, and yes, it's OS Command Injection again. This particular vulnerability impacts specific wireless camera models, underscoring the potential hazards of IoT devices left unpatched.

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Why Should You Care? The Broader Picture​

The vulnerabilities in devices made by NUUO and Reolink are more than just isolated technical glitches—they serve as common attack vectors in an increasingly hostile cyber landscape. IoT (Internet of Things) devices like IP cameras are a hotbed of vulnerabilities because they’re often part of sprawling, interconnected networks where a single compromise can snowball into massive breaches.
What’s particularly alarming is that, in many cases, the users of these devices—small businesses, municipalities, and even private individuals—often overlook firmware updates or don’t realize their devices are backdoored. This neglect creates rich opportunities for hackers to exploit vulnerabilities at scale.
Now think about organizations where these cameras or DVRs guard sensitive perimeters—banks, utilities, government buildings. The stakes grow exponentially when such devices are used as gateways to more critical systems.

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Binding Operational Directive (BOD) 22-01: Let’s Talk About It​

To combat this world of threats, the U.S. government enacted BOD 22-01, a Binding Operational Directive compelling Federal Civilian Executive Branch (FCEB) agencies to prioritize and fix vulnerabilities listed in the KEV Catalog by a mandated due date. The goal: reduce exposure to well-known and widely-exploited vulnerabilities and harden defenses against active cyber threats.
Originally announced in 2022, this directive has generated significant ripple effects across public and private sectors. Even if you’re not legally bound by BOD 22-01, the intent behind it is crystal clear: proactive vulnerability management is no longer optional. Cybersecurity negligence is costly—and anyone can be a victim.

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Mitigations and Recommendations: What Can YOU Do?​

CISA strongly encourages organizations—not just government agencies—to address these vulnerabilities immediately. Here’s a playbook to help you get started:

1. Patch, Patch, Patch​

• If you're running any of the NUUO or Reolink devices covered by these CVEs, check the manufacturer’s website to see if firmware updates or patches are available. Apply them ASAP.
• Can’t find a patch? Plan to phase out these devices from your network and replace them with supported alternatives.

2. Implement Network Segmentation​

• Keep IoT devices isolated from your primary network. This way, even if your IP cameras or DVR systems get compromised, attackers can’t waltz into your critical operational infrastructure.

3. Review Authentication Practices​

• Wherever possible, ensure that robust authentication mechanisms—think multi-factor authentication (MFA)—are in place for accessing IoT devices.
• Disable default or weak passwords, as these are the first line of attack for automated bots.

4. Monitor and Audit Continuously​

• Enable logging on your IoT devices and regularly review logs for unusual activity.
• Use monitoring software to detect signs of compromise, such as configurations being changed without authorization or spikes in network traffic.

5. Educate Your Team​

• Cybersecurity begins with awareness. Make staff aware of the criticality of timely updates and safe internet practices.
• Conduct drills or tabletop exercises where teams must respond to IoT device breaches—this ensures rapid response in the event of a real attack.

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What Happens If I Ignore This?​

Failing to patch these vulnerabilities isn’t just risky; it’s reckless. You’ll be leaving the door wide open for threat actors who are already exploiting these vulnerabilities in active cyberattacks. Potential consequences include:

• Loss of operational control over key surveillance systems.
• Privacy violations as hackers spy on video feeds.
• Financial and reputational damage from breaches.
• Access to your internal networks for further exploitation.

Remediation might feel like a hassle, but trust us—it’s far less costly (and stressful) than dealing with a breach.

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Looking Ahead: A Living Threat Landscape​

CISA maintains the Known Exploited Vulnerabilities Catalog as a "living" document, constantly updated to account for real-world security threats. Given the rapid pace at which vulnerabilities and exploits emerge, regular monitoring of this catalog should be part of your cybersecurity hygiene routine.
These vulnerabilities serve as a stark reminder that cybersecurity is an ongoing process. Trust no default configurations, verify all updates, and patch everything you can.

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Final Thoughts: Join the Fight Against Exploitation​

CISA’s alert may initially feel like a wake-up call for federal agencies, but it’s really a message for us all. Whether you're managing a complex enterprise network or a small home-based setup, the same rules apply: don’t take your cybersecurity for granted.
WindowsForum.com will continue to monitor emerging threats and provide tailored guidance to our community. Drop by our forums and share how your organization is dealing with vulnerabilities like these—we’d love to hear your insights!
So, Windows warriors, are your defenses up to date? It’s time to take action. If you have questions about firmware updates or patching strategies, let’s get the conversation started below!

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Source: CISA CISA Adds Four Known Exploited Vulnerabilities to Catalog