Linux kernel gets a fix for a flaw that enabled attackers to escape VMs

The Linux kernel’s networking stack was found vulnerable to a guest-to-host escape attack, in which an attacker operating inside a virtual machine (VM) could cross the isolation boundary and access the underlying host. Dubbed PwnEscape and tracked as CVE-2026-99999, a flaw allowed guest-controlled packet metadata to trigger a write that changes an IPv4 header after the kernel has already processed it. That flaw could…

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CSO Online

Attackers compromised 42 GitHub repositories by using files too large to be searched

A security research firm reported Monday that it had identified breaches of 42 third-party GitHub repositories in which attackers had deployed payload blobs large enough “to evade the GitHub search and API paths normally used to find this kind of compromise.” The report from JFrog Security Research said the victimized repositories contained execution hooks for AI coding assistants and IDEs, along with polymorphic wra…

CSO Online

Attackers built a ‘Skynet’ AI agent that hijacks exposed models to run cyberattacks

Skynet is no longer a fictional adversary. Attackers have built an offensive agent that exploits unprotected AI models on the web with a ‘Skynet’ directive that allows them to run unattended for up to 100,000 steps. In this mode, a reference to the humanity-destroying artificial neural network-based superintelligence system in the Terminator film franchise, the agent can kick off tools, scan for and infect targets, d…

Cisco Security Advisories

Vulnerabilities in node.js Affecting Cisco Products: October 2026

On October 21, 2026, Node.js announced the availability of fixes for multiple vulnerabilities across the following supported release lines: 22.x, 24.x, and 26.x. These vulnerabilities impact critical operations such as the Brotli decoder, DNS resolution, and TLS certificate validation. The vulnerabilities pose risks for remote code execution and traffic interception. For more information, see Node.js Security Release…

Cisco Security Advisories

Vulnerabilities in node.js Affecting Cisco Products: October 2026

On October 21, 2026, Node.js announced the availability of fixes for multiple vulnerabilities across the following supported release lines: 22.x, 24.x, and 26.x. These vulnerabilities impact critical operations such as the Brotli decoder, DNS resolution, and TLS certificate validation. The vulnerabilities pose risks for remote code execution and traffic interception. For more information, see Node.js Security Release…