Vulnerabilities are flaws attackers can exploit to access systems or data; timely patching, isolation, and least privilege reduce the impact.
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Background for this topic.
A vulnerability is a weakness in a system’s design, code, configuration, or operating process that could allow an attacker to violate a security requirement. It may affect software, hardware, networks, cloud services, or exposed interfaces, and is not automatically exploitable: practical risk depends on factors such as exposure, required privileges, available attack paths, and existing controls. Outcomes can include unauthorized access, information disclosure, code execution, or disruption of service.
Effective vulnerability management combines accurate asset inventory with code review, security testing, scanning, and trusted vulnerability intelligence. Organizations should prioritize weaknesses affecting reachable, business-critical systems—especially when exploitation is known or requires little access—then patch or otherwise mitigate them and verify the fix. Where patching is delayed, controls such as disabling an exposed feature, restricting network access, or strengthening authentication can reduce the attack surface. Records should preserve affected versions, risk decisions, remediation owners, and validation results.
A vulnerability in the WinRAR file archiver solution could be exploited to bypass the Mark of the Web (MotW) security warning and execute arbitrary code on a Windows machine. [...]
A maximum severity remote code execution (RCE) vulnerability has been discovered impacting all versions of Apache Parquet up to and including 1.15.0. [...]
Ivanti has released security updates to patch a critical Connect Secure remote code execution vulnerability exploited by a China-linked espionage actor to deploy malware since at least mid-March 2025. [...]
A vulnerability in Verizon's Call Filter feature allowed customers to access the incoming call logs for another Verizon Wireless number through an unsecured API request. [...]
Cisco warns admins to patch a critical Cisco Smart Licensing Utility (CSLU) vulnerability, which exposes a built-in backdoor admin account now used in attacks. [...]
Apple has released security updates that backport fixes for actively exploited vulnerabilities that were exploited as zero-days to older versions of its operating systems. [...]
Attackers are now targeting a critical authentication bypass vulnerability in the CrushFTP file transfer software using exploits based on publicly available proof-of-concept code. [...]
Microsoft used its AI-powered Security Copilot to discover 20 previously unknown vulnerabilities in the GRUB2, U-Boot, and Barebox open-source bootloaders. [...]