// #server-security
4 articles
ProFTPD CVE-2026-42167 — Authentication Bypass Leading to Remote Code Execution
A vulnerability in ProFTPD — one of the most widely deployed open-source FTP server implementations — allows a remote unauthenticated attacker to bypass authentication controls and achieve code execution on the server. CVE-2026-42167 affects ProFTPD versions prior to 1.3.9a. FTP servers are frequently forgotten in patch management programmes; administrators should verify ProFTPD version and apply the update.
Linux 'CopyFail' Kernel Privilege Escalation — Root Access on All Major Distributions Since 2017
A newly weaponised local privilege escalation vulnerability in the Linux kernel's copy-on-write mechanism allows unprivileged local users to gain root access on virtually all major Linux distributions running kernels from 2017 onwards. A working public exploit has been released. Kernel patches are available; organisations running Linux servers, containers, and cloud instances should patch immediately.
Linux Kernel Netfilter Vulnerability Batch: CVE-2026-31414 and Cluster Require Prompt Patching
A cluster of Linux kernel vulnerabilities in the netfilter subsystem — led by CVE-2026-31414 — has been patched across stable kernel branches, affecting versions 6.1 through 6.10. The flaws span NULL pointer dereferences and connection tracking weaknesses that can cause privilege escalation or denial of service. Enterprise Linux distributions are releasing updates; unmanaged servers and container hosts running custom kernel builds require manual attention.
Dell iDRAC Service Module CVE-2026-23856 Allows Local Privilege Escalation on PowerEdge Servers
Dell has patched CVE-2026-23856, a privilege escalation vulnerability in the iDRAC Service Module (iSM) shipped with PowerEdge servers. A local attacker with standard user privileges can exploit improper access controls in the iSM — which runs with elevated system privileges to communicate with the hardware management interface — to elevate to SYSTEM or root. Updated iSM packages are available for both Windows and Linux.