Tag: privilege escalation
109 articles
Windows Zero-Days Expose BitLocker, CTFMON Vulnerabilities
A security researcher has uncovered a pair of alarming Windows zero-day vulnerabilities, including a BitLocker bypass and a privilege-escalation exploit that can be triggered with just a USB drive. Dubbed YellowKey, this exploit can even surface a shell on BitLocker-protected systems, giving attackers an easy way in.
Linux Flaw Exposes Systems to Root Privilege Attacks
A newly discovered Linux kernel vulnerability, dubbed Fragnasia, allows hackers to gain root privileges and take control of your system - and it's been hiding in plain sight in all Linux kernels released before May 13, 2026. This high-severity flaw lets unprivileged attackers write malicious code into read-only files, giving them unrestricted access to your system.
Linux Vulnerability Exposes Widespread Risk of Local Privilege Escalation
A critical Linux vulnerability, dubbed copy.fail, poses a severe risk of local privilege escalation, allowing unprivileged processes to rapidly escalate to root access. This shocking flaw, considered one of the worst in years, can be exploited with alarming ease.
Linux Defenders Scramble to Outpace Exploit Cycle
Linux defenders are racing against the clock to outmaneuver exploiters, with one maintainer proposing a temporary "kill switch" to disable vulnerable kernel functions until a proper patch can be developed. This stopgap solution aims to buy crucial time between vulnerability discovery and patch release.
Attackers Exploit AD CS for Stealthy Privilege Escalation
Malicious actors are exploiting weaknesses in Active Directory Certificate Services (AD CS) to secretly escalate privileges, often disguising their attacks as routine administrative actions. This stealthy tactic allows them to blend in with normal operations, making it a high-impact threat that's often under-monitored.
Claude AI Extension Flaw Enables Cross-Plugin Hijacking
A security flaw in the Claude AI Chrome extension could put users at risk, as it allows other browser extensions to issue commands to Claude without verification. This vulnerability creates a backdoor for hackers to hijack the AI model, warns LayerX senior researcher Aviad Gispan.
Linux Flaw Exposes Millions to Local Privilege Escalation
A critical Linux flaw, known as Copy Fail, has been discovered, exposing millions to potential local privilege escalation attacks - a vulnerability that highlights a deterministic logic error in the Linux kernel's cryptographic subsystem. This flaw, tracked as CVE-2026-31431, was publicly disclosed on April 29, 2026.
CISA Warns of Active Exploits of Linux 'CopyFail' Flaw
A newly disclosed Linux kernel vulnerability, dubbed "CopyFail," is being actively exploited, allowing low-privilege users to gain full root control on unpatched systems with a single, unmodified exploit binary. This alarming flaw, tracked as CVE-2026-31431, has sparked emergency patching efforts to prevent widespread attacks.
CISA Warns of Active Linux Exploit
A newly discovered Linux kernel bug, dubbed "Copy Fail," allows unprivileged users to gain root privileges on unpatched systems, prompting urgent warnings from CISA and researchers. If your Linux system was built between 2017 and the recent patch, you're at risk - and need to act fast to protect yourself.
Microsoft Updates Disrupt Third-Party Backup Apps on Windows
Microsoft's latest Windows security update has caused disruptions to third-party backup apps, adding a vulnerable kernel driver to its blocklist to protect users from potential exploits. This change aims to prevent attackers from escalating privileges or executing arbitrary code, but has unfortunately caused failures in some backup products.
Microsoft Fixes Entra ID Flaw That Enabled Service Principal Takeovers
Microsoft has patched a vulnerability in Entra ID that allowed hackers to hijack service principals, potentially leading to full takeover of sensitive systems. A security researcher discovered the flaw, which stemmed from overly broad permissions in the Agent ID Administrator role.
CISA Mandates Patching of Exploited BlueHammer Flaw in Federal Systems
Don't let your federal systems become an easy target: CISA is mandating the patching of the exploited BlueHammer flaw to prevent malicious cyber actors from gaining a foothold. A high-severity vulnerability in Microsoft Defender can allow low-privileged users to gain SYSTEM permissions - but a patch is available.
Microsoft Fixes ASP.NET Core Bug That Enables Privilege Escalation
Microsoft just patched a critical bug in ASP.NET Core that could let hackers escalate their privileges and take control - and they've already released an out-of-band update to fix it. The flaw, tracked as CVE-2026-40372, carries a near-perfect CVSS score of 9.1, indicating a high severity threat.
Microsoft Disrupts ASP.NET Flaw Allowing SYSTEM Privilege Escalation
Microsoft has patched a critical ASP.NET Core vulnerability, CVE-2026-40372, that allowed unauthenticated attackers to forge authentication cookies and gain SYSTEM privileges on affected devices. This fix addresses a flaw in the ASP.NET Core Data Protection cryptographic APIs that could be exploited for privilege escalation.
Leaked Windows Zero-Days Exploited in Targeted Attacks
Cyber attackers are exploiting newly disclosed Windows flaws in targeted attacks, allowing them to gain alarming levels of system control before organizations can patch the vulnerabilities. This alarming window of opportunity leaves defenders scrambling to respond.
CISA Warns of Exploited Windows Task Host Vulnerability
Stay one step ahead of cyber threats by securing your Windows systems - a recently exploited vulnerability in Windows Task Host could let attackers escalate privileges and take full control of your machines. The Cybersecurity and Infrastructure Security Agency (CISA) has flagged this issue as high-risk, urging swift action to protect affected systems.
Zero Trust Fortifies Identity Security Against Credential Exploits
Stolen credentials are a hacker's dream come true, leading to easy privilege escalation and full network compromise - but what if you could lock down your identities and shut the door on these threats? An identity-first Zero Trust approach is the powerful solution you need to fortify your security.
GPUBreach Attack Escalates CPU Privileges via Graphics Units
Imagine a scenario where the very processor that powers your gaming experiences or fuels your AI models becomes a vulnerability that attackers can exploit to hijack your entire machine - new research reveals that this is no longer just a theoretical threat. A recently discovered attack, dubbed GPUBreach, can escalate CPU privileges through graphics units, leaving your system exposed to potential takeover.
GPUBreach Attack Exploits GPU Memory for System Takeover
A newly discovered vulnerability, dubbed GPUBreach, allows hackers to exploit modern GPU memory and take control of an entire machine by inducing Rowhammer bit-flips in GDDR6 memory. This alarming attack can escalate privileges and lead to a full system compromise, leaving no room for complacency.
Windows Zero-Day Exploit Leaked, Enables Instant Admin Access
A disgruntled researcher has leaked working exploit code for a previously unknown Windows vulnerability, dubbed BlueHammer, allowing attackers to instantly gain administrator access to any system. This alarming development comes after the researcher privately submitted the flaw to Microsoft, which had not yet patched the vulnerability.
Fortinet Fixes Exploited Flaw in FortiClient EMS Software
Fortinet has urgently patched a critical vulnerability in its FortiClient EMS software, which had already been exploited in the wild, to prevent further security breaches. The flaw, tracked as CVE-2026-35616, allows for pre-authentication API access bypass and privilege escalation, posing a significant threat to endpoint security.
Linux Kernel Flaw Poses Critical Risk
A critical flaw in the Linux kernel has been uncovered, posing a serious risk to systems worldwide by allowing local users to potentially gain elevated privileges or cause a denial of service. This vulnerability, affecting numerous Linux distributions, highlights the delicate balance between vulnerability and catastrophe in today's digital landscape.
Microsoft Patch Tuesday Exclusive: Best Critical Fixes
Heads up: Microsoft’s March Patch Tuesday delivers fixes for 77 vulnerabilities—no fresh zero-days, but the volume means admins should triage quickly and prioritize internet-facing and critical servers before attackers turn disclosures into exploits.
AI Assistants Exclusive Shift, Best Security Tactics
AI assistants can act as intern, coder and courier all at once—automating emails, scripts and cloud actions with near-total access. That convenience is collapsing old defenses, so organizations must rethink trusted access and adopt smarter security tactics before automation becomes an attack vector.