A New Generation Of Critical Vulnerabilities

Cyber security professionals should be concerned about the fact that more than two thirds of vulnerabilities recorded in 2020 require no user interaction of any kind to exploit. Attackers exploiting these vulnerabilities don’t even need their targets to unwittingly perform an action, such as clicking a malicious link in an email. This means that attacks can easily slip under the radar.   
 
According to a  new report from Redscan a record number of critical and high severity vulnerabilities were logged to the US National Institute of Standards (NIST) Vulnerability Database NIST NVD in 2020.  Redscan's analysis shows  a notable rise in lo the large volume of vulnerabilities which now require user privileges and this one of the reasons why phishing remains a primary tactic of cyber criminals.
 
Users with a high degree of privileges, such as system administrators, are a prize target because they are able to open more doors for attackers. 
 
NIST logged more than 18,000 vulnerabilities in 2020, over 10,000 of which were critical or high severity which is an all-time high. Redscan’s analysis looks beyond severity scores, detailing the rise of low complexity vulnerabilities as well as those which require no user interaction to exploit. These trends may be of concern to security teams, highlighting the need for organisations to focus patch management efforts and adopt a multi-layered approach to vulnerability management. 
 
There are also positive trends, such as a decrease in Common Vulnerabilities and Exposures (CVE)s which require no privileges to exploit.  Key findings include:  
 
  •  More security vulnerabilities were disclosed in 2020 (18,103) than in any other year to date – at an average rate of 50 CVEs per day.
  • 57% of vulnerabilities in 2020 were classified as being ‘critical’ or ‘high’ severity (10,342).
  • Low complexity CVEs are on the rise, representing 63% of vulnerabilities disclosed in 2020. 
  • Vulnerabilities which require no user interaction to exploit are also increasing, representing 68% of all CVEs recorded in 2020.
  • Vulnerabilities which require no user privileges to exploit are on the decline (from 71% in 2016 to 58% in 2020.
  • 2020 saw a large spike in physical and adjacent vulnerabilities, likely due to the proliferation of IoT and smart devices in use and being tested by researchers. 
Analysis of the NIST NVD presents a mixed outlook for security teams, according to George Glass, Head of Threat Intelligence at Redscan. "Vulnerabilities are on the rise, including some of the most dangerous variants. However, we’re seeing more positive signs, including a drop in the percentage of vulnerabilities which require no user privileges to exploit... When analysing the potential risk that vulnerabilities pose, organisations must consider more than just their severity score."
 
Many CVEs are never or rarely exploited in the real world because they are too complex or require attackers to have access to high level privileges.  Underestimating what appear to be low risk vulnerabilities can leave organisations open to ‘chaining’, in which attackers move from one vulnerability to another to gradually gain access at increasingly critical stages. 
 
Identifying which vulnerabilities to prioritise is a perennial challenge in IT security, especially as the number of CVEs only continues to grow. To aid decision-making, security teams need a practical understanding of the potential impact vulnerabilities pose and how readily they are being exploited in the wild. 
 
Defence in depth is also important. Not all vulnerabilities are known and patched, so persistent attackers may eventually find a way to breach an organisation’s defences. Best practice lies in having supplementary controls in place, such as continuous network and endpoint monitoring, to mitigate risks.
 
NIST Vulnerability Analysis 2020:
 
You Might Also Read: 
 
Connected Devices Must Be More Secure:
« Facebook Unfriends Australia
New Cyber Training For Security Professionals »

Infosecurity Europe
CyberSecurity Jobsite
Perimeter 81

Directory of Suppliers

Infosecurity Europe, 3-5 June 2025, ExCel London

Infosecurity Europe, 3-5 June 2025, ExCel London

This year, Infosecurity Europe marks 30 years of bringing the global cybersecurity community together to further our joint mission of Building a Safer Cyber World.

TÜV SÜD Academy UK

TÜV SÜD Academy UK

TÜV SÜD offers expert-led cybersecurity training to help organisations safeguard their operations and data.

North Infosec Testing (North IT)

North Infosec Testing (North IT)

North IT (North Infosec Testing) are an award-winning provider of web, software, and application penetration testing.

Clayden Law

Clayden Law

Clayden Law advise global businesses that buy and sell technology products and services. We are experts in information technology, data privacy and cybersecurity law.

Alvacomm

Alvacomm

Alvacomm offers holistic VIP cybersecurity services, providing comprehensive protection against cyber threats. Our solutions include risk assessment, threat detection, incident response.

Skybox Security

Skybox Security

Skybox combines firewall and network device data with vulnerability and threat intelligence, putting security decisions in your unique network context.

Government Communications Headquarters (GCHQ)

Government Communications Headquarters (GCHQ)

GCHQ defends Government systems from cyber threat, provide support to the Armed Forces and strive to keep the public safe, in real life and online.

Verlingue

Verlingue

Verlingue (formerly ICB Group) is a leading corporate insurance broker providing Insurance, Risk Management and related advice to businesses and private clients.

ATIS Systems

ATIS Systems

ATIS Systems offers first-class complete solutions for legal interception, mediation, data retention, and IT forensics.

Cyber Defense Agency (CDA)

Cyber Defense Agency (CDA)

Cyber Defense Agency is a premier professional services firm specializing in cyber security, computer network defense, and information security.

Dice

Dice

Dice is a leading recruitment platform, helping technology professionals manage their careers and employers connect with highly skilled tech talent in specialist areas including cybersecurity.

Swisscom Blockchain

Swisscom Blockchain

Swisscom Blockchain is focused on supporting the implementation and adaption of Blockchain-based platforms in enterprises across diverse industries.

Vulcan Cyber

Vulcan Cyber

At Vulcan, we’re modernizing the way enterprises reduce their cyber risk. From detection to resolution, we automate and orchestrate the vulnerability remediation process dynamically and at scale.

Cyber Security Operations Consulting (CyberSecOp)

Cyber Security Operations Consulting (CyberSecOp)

CyberSecOp is an ISO 27001 Certified Organization which provides cyber security operations services and risk management consulting.

Darkbeam

Darkbeam

Darkbeam provides a unified solution to protect against security, brand and compliance risks across your digital infrastructure.

US Coast Guard Cyber Command

US Coast Guard Cyber Command

US Coast Guard Cyber Command’s focus is to ensure the security of our cyberspace, maintain superiority over our adversaries,and safeguard our Nation’s critical maritime infrastructure.

iManage

iManage

iManage's intelligent, cloud-enabled, secure knowledge work platform enables organizations to uncover and activate the knowledge that exists inside their business.

Secjur

Secjur

Secjur is a provider of AI-based compliance tools that aim to put compliance, data protection, information security and whistleblowing on autopilot.

GISEC Global

GISEC Global

GISEC Global provides vendors and companies from around the world with access to lucrative opportunity to capitalize on what's set to become one of the world's booming markets.

Knowit

Knowit

Knowit support customers in the digital transformation, simplify people’s everyday lives and create secure and innovative solutions enabling a sustainable future.

Digital Security Authority (DSA)

Digital Security Authority (DSA)

The establishment of the Digital Security Authority, which incorporates the National CSIRT, is crucial to significantly raising the cybersecurity posture and capabilities of Cyprus.