Flexera’s 2023 Annual Vulnerability Review

Keypoints

• Major cybersecurity vendors typically publish annual reports structured into sections covering vulnerability summaries, threat trends, advisories breakdown, vendor analysis, patching statistics, and threat intelligence insights, providing a holistic view of the cybersecurity landscape.
• 2023 marked the highest number of advisories issued since 2002, with over 9,400 advisories and a 15% increase in CVE disclosures compared to 2022, reflecting escalating cyber threats and attack sophistication.
• The reports reveal a growing prevalence of vulnerabilities across Unix/Linux systems, accounting for over half of advisories, along with a noticeable rise in zero-day vulnerabilities, with 130 advisories reported in 2023.
• Key threat trends include increased exploit activity targeting Microsoft products, higher average threat scores, and extreme critical advisories, emphasizing the urgency of prompt patching and proactive vulnerability management.
• Vendor analysis highlights Cisco, F5, and Juniper as top networking vendors by advisories, while browsers like Chrome and Firefox remain frequent vectors for discovered exploits, often via remote attack vectors.
• Threat intelligence components integrate CVE and CVSS data, showing links to ransomware, malware, and recent cyber exploits, aiding organizations in prioritizing vulnerabilities based on exploit likelihood and impact.
• Most vulnerabilities are patched within 24 hours of public disclosure, but organizations face challenges in awareness and remediation time, stressing the importance of integrated vulnerability management solutions.