Tag: zero day
368 articles
Linux Rootkits Persist in Updated Forms
A single misstep with an over-privileged or poorly designed agent can quickly spiral into a serious incident, making the UK National Cyber Security Centre's warning feel alarmingly relevant. This urgency was underscored at Pwn2Own Berlin, where researchers exploited 47 zero-day flaws, raking in over $1.2 million in rewards.
Vulnerable Code Proliferates as AI Exploits Rise in Supply Chains
The alarming truth is that 75% of organizations are knowingly shipping vulnerable code, despite the risks, with the window from disclosure to exploit shrinking dramatically from 840 days in 2018 to just under two days today. This trend is expected to accelerate, with exploits potentially available in as little as one minute by 2028.
Cisco Exposes New Zero-Auth Vulnerability in Secure Workload Platform
Cisco has uncovered a critical zero-auth vulnerability in its Secure Workload platform, allowing attackers to access sensitive information and make configuration changes with alarming ease and admin-level privileges. This severe flaw, scoring a perfect 10.0 on the CVSS scale, demands immediate attention to prevent exploitation.
Microsoft Disrupts Zero-Day Attacks with Defender Patch Rollout
Microsoft is taking swift action to protect its users from zero-day attacks with an emergency patch rollout for its Defender software, ensuring that even the most vulnerable systems are safeguarded. The update addresses two critical vulnerabilities that were being actively exploited by hackers.
Claude AI Exposes Unaddressed Vulnerability in Sandbox Environment
A recent report by The Register revealed that a significant vulnerability in the Claude AI sandbox environment went unaddressed, leaving users exposed to potential risks. The issue was quietly fixed without a public disclosure or CVE assignment, sparking concerns about transparency in AI security.
Microsoft Discloses Mitigations for YellowKey Windows Zero-Day Vulnerability
Microsoft has issued urgent guidance to mitigate a newly publicized Windows zero-day vulnerability, dubbed YellowKey, which could allow attackers to bypass security features. The tech giant is working on a fix, but in the meantime, it's urging users to follow its interim guidance to stay protected.
Linux Kernel Faces New Exploit for DirtyDecrypt Vulnerability
A new exploit has been discovered for the DirtyDecrypt vulnerability in the Linux Kernel, allowing for a potentially devastating rxgk pagecache write due to a missing copy-on-write guard. This flaw, tracked as CVE-2026-31635, has a CVSS score of 7.5 and was recently patched after being reported by security researchers.
Microsoft Vulnerabilities Spike in Critical Areas
A single critical flaw, like CVE-2025-55241, can give attackers unrestricted access to any tenant, highlighting the alarming rise in critical Microsoft vulnerabilities, which doubled in 2025 despite a stable overall number of vulnerabilities. This sharp increase in high-impact weaknesses demands attention and action.
BitLocker Vulnerability Exposed in Zero-Day Windows Exploit
A newly discovered zero-day exploit, dubbed YellowKey, can bypass Windows 11's standard BitLocker encryption - but don't panic, as it requires physical access to the computer. This vulnerability was recently published by a researcher known as Nightmare-Eclipse on GitHub.
Ransomware Attacks Surge as Clop Gang Dominates Threat Landscape
Ransomware attacks have skyrocketed, with over 343 million blocked by Kaspersky products in just the first quarter of 2026 alone, highlighting a surge in threats from the notorious Clop gang and other malicious players. This alarming trend underscores a quarter marked by intensified ransomware activity and rapidly evolving cyber threats.
NGINX Rift Attackers Exploit Exposed Servers Within Days of Disclosure
Malicious actors are already probing and exploiting a long-standing vulnerability in NGINX web server software, just days after its disclosure - highlighting the urgent need for organizations to update their systems and safeguard against cyber threats. This 18-year-old flaw has quickly become a prime target for attackers seeking unauthorized access to exposed servers.
Security Researchers Uncover 47 Zero-Days at Pwn2Own Berlin
In a thrilling three-day competition, security researchers at Pwn2Own Berlin uncovered a staggering 47 zero-day vulnerabilities, raking in nearly $1.3 million in prize money, with the Devcore Research Team taking home a whopping $505,000. The top prizes included a $200,000 award for a VMware ESXi exploit and a $100,000 prize for a Microsoft SharePoint hack.
Zero-Day Exploit Escalates Privileges on Patched Windows Systems
A security researcher has uncovered a zero-day exploit, dubbed MiniPlasma, that can escalate privileges to LOCAL SYSTEM on fully patched Windows systems by targeting a vulnerability in the Windows Cloud Files Mini Filter Driver. This shocking flaw has left experts wondering if Microsoft simply missed the issue or if a patch was quietly rolled back.
Security Researchers Exploit 47 Zero-Days for $1.3 Million at Pwn2Own Berlin
In a stunning display of cybersecurity prowess, researchers at Pwn2Own Berlin 2026 exploited a whopping 47 zero-day flaws, raking in a total of $1.3 million in just three days. The competition saw contestants disclose and exploit vulnerabilities in top enterprise and AI-facing products, earning daily payouts of $523,000, $385,750, and $389,500.
Spyware Exploits Intimate Partner Abuse Globally
The dark side of technology has enabled a staggering 14,500 people across 128 countries to allegedly buy and use commercial spyware, giving them unrestricted access to intimate details of others' lives. This invasive software can track locations, activate microphones, and even compromise devices without a single click.
Cisco SD-WAN Zero-Day Exploited for Admin Access
A critical zero-day vulnerability, CVE-2026-20182, has been exploited in Cisco SD-WAN, allowing hackers to gain unrestricted administrative control with a severity score of 10 on the CVSS scale. This flaw enables unauthenticated attackers to manipulate network configurations and take control of Cisco Catalyst SD-WAN Controller with ease.
Cisco Zero-Day Exploited in Ongoing Attacks by Persistent Threat Group
A newly discovered Cisco zero-day vulnerability, CVE-2026-20182, is being exploited in ongoing attacks, allowing threat actors to gain the highest administrative access to a network controller, essentially handing them a master key to wreak havoc. This max-severity flaw has sparked a race against time for Cisco customers and national cyber authorities to contain the damage.
Hackers Disrupt Microsoft Exchange, Windows 11 at Pwn2Own Contest
Security researchers just scored big at Pwn2Own Berlin 2026, raking in $385,750 for exploiting 15 zero-day vulnerabilities in top tech targets like Microsoft Exchange and Windows 11. The contest, running from May 14-16, offers up to $1 million in prizes for hacking the latest enterprise technologies.
TanStack Supply Chain Attack Targets OpenAI, Forces macOS Updates
OpenAI sprang into action after detecting a sneaky supply chain attack targeting TanStack, quickly investigating and containing the threat to protect its systems. The attack impacted just two employee devices, with limited internal code repositories and credential material compromised.
Wireless Vulnerabilities Skyrocket, Outpacing Traditional Threats
The number of wireless vulnerabilities has skyrocketed, with a staggering 937 new threats discovered in 2025 alone - that's 2.5 new vulnerabilities every day. This represents a 60% increase since the start of 2024, and a growth rate that's 20 times faster than traditional threats over the last 15 years.
Microsoft Warns of Severe Zero-Day Flaw in On-Prem Exchange Servers
Microsoft just sounded the alarm on a severe zero-day flaw in on-prem Exchange servers, warning that a high-severity vulnerability could let attackers send malicious code to victims via specially crafted emails. This flaw, tracked as CVE-2026-42897, has already been automatically mitigated if the EM Service is enabled, which it is by default.
CISA Flags Cisco SD-WAN Vulnerability as Exploited
CISA has flagged a critical Cisco SD-WAN vulnerability, CVE-2026-20182, as exploited, giving federal agencies until May 17, 2026, to patch the authentication bypass flaw that could grant hackers administrative privileges. This vulnerability, scoring 10.0 on the CVSS scale, is now a top priority for remediation.
Cisco SD-WAN Flaw Exploited in Zero-Day Attacks
A critical vulnerability in Cisco's SD-WAN system is being actively exploited, allowing attackers to bypass authentication and gain unauthorized access. This high-risk flaw, tracked as CVE-2026-20182, affects both on-prem and cloud deployments of Cisco Catalyst SD-WAN products.
Security Researchers Expose Zero-Days in Windows 11, Microsoft Edge
Security researchers just scored a whopping $523,000 in cash awards by uncovering 24 unique zero-days, including a game-changing exploit that chained four logic bugs to break through Microsoft Edge's sandbox. This major breakthrough has set the stage for a new wave of powerful exploits, leaving users eager to see what's next.