Stay updated on the latest in information security flaws. Explore news, insights, and analysis on vulnerabilities affecting digital safety.
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Background for this topic.
A flaw is a defect in software, hardware, system design, or configuration that causes unintended behavior. In security reporting, the term usually means a weakness that could violate confidentiality, integrity, or availability when reached through a particular interface, input, privilege, or operating condition. Not every flaw is exploitable, and exploitability depends on factors such as exposure, authentication requirements, affected versions, and available mitigations.
Flaws matter because they can create attack paths in applications, operating systems, devices, APIs, or administrative settings. Security teams assess their severity and exposure, prioritize remediation, apply patches or configuration changes, and use isolation or access controls when immediate fixes are unavailable. Code review, testing, vulnerability scanning, and monitoring can reveal flaws across the development and operational lifecycle. Reports should distinguish a confirmed vulnerability from a theoretical defect and provide enough technical detail to support validation without unnecessarily enabling exploitation.
CISA has warned U.S. federal agencies to secure their networks against attacks exploiting a high-severity vulnerability in NAKIVO's Backup & Replication software. [...]
Attackers have started targeting Cisco Smart Licensing Utility (CSLU) instances unpatched against a vulnerability exposing a built-in backdoor admin account. [...]
Popular WordPress security plugin WP Ghost is vulnerable to a critical severity flaw that could allow unauthenticated attackers to remotely execute code and hijack servers. [...]
WhatsApp has patched a zero-click, zero-day vulnerability used to install Paragon's Graphite spyware following reports from security researchers at the University of Toronto's Citizen Lab. [...]
A critical remote code execution (RCE) vulnerability in Apache Tomcat tracked as CVE-2025-24813 is actively exploited in the wild, enabling attackers to take over servers with a simple PUT request. [...]