Tag: zero-day
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Cybercriminals Exploit VMware ESXi Vulnerabilities Using Zero-Day Toolset
Huntress security researchers have uncovered a sophisticated VMware ESXi exploitation campaign using a zero-day toolkit that remained undetected for over a year before VMware’s public disclosure. The December 2025 intrusion, which began through a compromised SonicWall VPN, demonstrates how threat actors are chaining multiple critical vulnerabilities to achieve complete hypervisor compromise. Attack Chain Begins With…
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Cybercriminals Exploit VMware ESXi Vulnerabilities Using Zero-Day Toolset
Huntress security researchers have uncovered a sophisticated VMware ESXi exploitation campaign using a zero-day toolkit that remained undetected for over a year before VMware’s public disclosure. The December 2025 intrusion, which began through a compromised SonicWall VPN, demonstrates how threat actors are chaining multiple critical vulnerabilities to achieve complete hypervisor compromise. Attack Chain Begins With…
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Attackers Exploit Zero-Day in End-of-Life D-Link Routers
Hackers are attacking a critical zero-day flaw in unsupported D-Link DSL routers to run arbitrary commands. First seen on darkreading.com Jump to article: www.darkreading.com/cyberattacks-data-breaches/attackers-exploit-zero-day-end-of-life-d-link-routers
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Entsorgung empfohlen: Laufende Attacken auf DRouter über Zero-Day-Lücke
D-Link untersucht eine bisher ungepatchte Schadcode-Lücke in seinen Routern. Für einige betroffene Modelle wird es keinen Patch geben. First seen on golem.de Jump to article: www.golem.de/news/entsorgung-empfohlen-d-link-router-werden-ueber-zero-day-luecke-attackiert-2601-203887.html
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Entsorgung empfohlen: DRouter werden über Zero-Day-Lücke attackiert
D-Link untersucht eine bisher ungepatchte Schadcode-Lücke in seinen Routern. Für einige betroffene Modelle wird es keinen Patch geben. First seen on golem.de Jump to article: www.golem.de/news/entsorgung-empfohlen-d-link-router-werden-ueber-zero-day-luecke-attackiert-2601-203887.html
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AI, Quantum, and the New Threat Frontier: What Will Define Cybersecurity in 2026?
Tags: access, ai, api, application-security, attack, authentication, automation, business, ciso, cloud, compliance, computer, computing, container, control, crypto, cryptography, cyber, cybersecurity, data, data-breach, defense, detection, encryption, exploit, finance, flaw, framework, governance, government, healthcare, iam, identity, infrastructure, injection, LLM, malicious, metric, monitoring, network, nist, open-source, oracle, regulation, resilience, risk, service, skills, software, strategy, supply-chain, threat, tool, vulnerability, vulnerability-management, waf, zero-day, zero-trustAI, Quantum, and the New Threat Frontier: What Will Define Cybersecurity in 2026? madhav Tue, 01/06/2026 – 04:44 If we think 2025 has been fast-paced, it’s going to feel like a warm-up for the changes on the horizon in 2026. Every time this year, Thales experts become cybersecurity oracles and predict where the industry is…
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Ten thousand firewalls are vulnerable to old vulnerability
This news brief originally appeared on ComputerSweden.More Fortinet security news:FortiGate firewall credentials being stolen after vulnerabilities discoveredFortinet criticized for ‘silent’ patching after disclosing second zero-day vulnerability in same equipmentFortinet admins urged to update software to close FortiCloud SSO holes First seen on csoonline.com Jump to article: www.csoonline.com/article/4112857/ten-thousand-firewalls-are-vulnerable-to-old-vulnerability.html
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Cybersecurity Snapshot: Predictions for 2026: AI Attack Acceleration, Automated Remediation, Custom-Made AI Security Tools, Machine Identity Threats, and More
Tags: access, ai, attack, automation, breach, ciso, cloud, computer, conference, control, cyber, cybersecurity, data, data-breach, defense, detection, exploit, governance, group, identity, intelligence, mitigation, risk, service, threat, tool, zero-dayIn this special edition, Tenable leaders forecast key 2026 trends, including: AI will make attacks more plentiful and less costly; machine identities will become the top cloud risk; preemptive cloud and exposure management will dethrone runtime detection; and automated remediation gets the go-ahead. Key takeaways AI will supercharge the speed and volume of traditional cyber…
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The biggest cybersecurity and cyberattack stories of 2025
2025 was a big year for cybersecurity, with cyberattacks, data breaches, threat groups reaching new notoriety levels, and, of course, zero-day flaws exploited in breaches. Some stories, though, were more impactful or popular with our readers than others. This article explores 15 of the biggest cybersecurity stories of 2025. First seen on bleepingcomputer.com Jump to…
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Breach Roundup: Clop Tied to Korean Air Vendor Breach
Also: China-Linked APT Hijack Updates, Condé Nast Data Leaked, La Poste Hit. This week, a Clop-linked vendor breach hit Korean Air, a China-linked APT hijacked software updates, a critical zero-day flaw remained unpatched, Condé Nast faced a data leak, La Poste was disrupted and Korean police extradited a malware operation suspect. First seen on govinfosecurity.com…
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Infosecurity’s Top 10 Cybersecurity Stories of 2025
Explore Infosecurity Magazine’s most-read cybersecurity stories of 2025, from major vendor shake-ups and zero-day exploits to AI-driven threats and supply chain attacks First seen on infosecurity-magazine.com Jump to article: www.infosecurity-magazine.com/news/infosecurity-top-10-stories-2025/
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Sunken Ships: Will Orgs Learn From Ivanti EPMM Attacks?
The April/May zero-day exploitations of Ivanti’s mobile device management platform meant unprecedented pwning of thousands of orgs by a Chinese APT, and history will probably repeat itself. First seen on darkreading.com Jump to article: www.darkreading.com/cyber-risk/sunken-ships-ivanti-epmm-attacks
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Zero-day vulnerabilities: what they are and how to respond
Zero-day vulnerabilities often attract attention and concern because of their unpredictability. They are, by definition, weaknesses that are unknown to software vendors and therefore have no official fix at the point of discovery. When discovered and exploited by malicious actors, they allow attackers to bypass controls before organisations even realise there is a problem. The”¦…
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Net-SNMP Vulnerability Triggers Buffer Overflow, Crashing the Daemon
A critical buffer overflow vulnerability in Net-SNMP’s snmptrapd daemon allows remote attackers to crash the service by sending specially crafted packets, potentially disrupting network monitoring operations across enterprise environments. The flaw, tracked as CVE-2025-68615, affects all versions of Net-SNMP before the recently released patches. Security researcher Buddurid, working with Trend Micro Zero Day Initiative, discovered…
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Implementing NIS2, without getting bogged down in red tape
Tags: access, ai, automation, backup, bsi, business, cloud, compliance, control, data, detection, email, encryption, iam, identity, incident response, infrastructure, law, least-privilege, metric, monitoring, network, nis-2, regulation, saas, sbom, service, siem, soc, software, startup, supply-chain, technology, threat, tool, update, vulnerability, vulnerability-management, zero-dayIT in transition: From text documents to declarative technology: NIS2 essentially requires three things: concrete security measures; processes and guidelines for managing these measures; and robust evidence that they work in practice.Process documentation, that is, policies, responsibilities, and procedures, is not fundamentally new for most larger companies. ISO 27001-based information security management systems, HR processes, and…
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University of Phoenix Data Breach: 3.5M Individuals Affected
Full Scope of Clop Ransomware Group’s Oracle E-Business Suite Hits Still Emerging. The University of Phoenix is notifying 3.5 million individuals that their personal information was compromised in a data breach. The theft traces to the Clop ransomware group’s supply-chain campaign against users of Oracle E-Business Suite, in which it wield two zero-day vulnerabilities. First…
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University of Phoenix Data Breach: 3.5M Individuals Affected
Full Scope of Clop Ransomware Group’s Oracle E-Business Suite Hits Still Emerging. The University of Phoenix is notifying 3.5 million individuals that their personal information was compromised in a data breach. The theft traces to the Clop ransomware group’s supply-chain campaign against users of Oracle E-Business Suite, in which it wield two zero-day vulnerabilities. First…
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University of Phoenix Data Breach: 3.5M Individuals Affected
Full Scope of Clop Ransomware Group’s Oracle E-Business Suite Hits Still Emerging. The University of Phoenix is notifying 3.5 million individuals that their personal information was compromised in a data breach. The theft traces to the Clop ransomware group’s supply-chain campaign against users of Oracle E-Business Suite, in which it wield two zero-day vulnerabilities. First…
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Threat Actors Exploit Zero-Day in WatchGuard Firebox Devices
With attacks on the critical firewall vulnerability, WatchGuard joins a list of edge device vendors that have been targeted in recent weeks. First seen on darkreading.com Jump to article: www.darkreading.com/vulnerabilities-threats/threat-actors-zero-day-watchguard-firebox
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WatchGuard Fixes Firewall Zero-Day Being Actively Exploited
Scans Count 117,000 Unpatched Firewalls Running Vulnerable Version of Fireware OS. Attackers are actively attempting to exploit a now patched, zero-day vulnerability in WatchGuard Firebox firewalls, tracked as CVE-2025-14733, that can be used to remotely execute code. Scans show that over 115,000 of these edge devices remain internet-connected, unpatched and at risk. First seen on…
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125,000 WatchGuard Firewalls Vulnerable to Remote Attacks
A critical zero-day flaw is being actively exploited to remotely compromise more than 125,000 WatchGuard Firebox firewalls. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/125000-watchguard-firewalls-vulnerable-to-remote-attacks/
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Week in review: Exploited zero-day in Cisco email security appliances, Kali Linux 2025.4 released
Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: How researchers are teaching AI agents to ask for permission the right way … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2025/12/21/week-in-review-exploited-zero-day-in-cisco-email-security-appliances-kali-linux-2025-4-released/
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Hackers Stole Millions of PornHub Users’ Data for Extortion
Plus: Cisco discloses a zero-day with no available patch, Venezuela accuses the US of a cyberattack, and more. First seen on wired.com Jump to article: www.wired.com/story/security-news-this-week-hackers-stole-millions-of-pornhub-users-data-for-extortion/
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Hackers Stole Millions of PornHub Users’ Data for Extortion
Plus: Cisco discloses a zero-day with no available patch, Venezuela accuses the US of a cyberattack, and more. First seen on wired.com Jump to article: www.wired.com/story/security-news-this-week-hackers-stole-millions-of-pornhub-users-data-for-extortion/
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Hundreds of Cisco customers are vulnerable to new Chinese hacking campaign, researchers say
Cisco warned that Chinese government hackers are exploiting a zero-day in some of its products. Researchers now say there are hundreds of vulnerable Cisco customers. First seen on techcrunch.com Jump to article: techcrunch.com/2025/12/19/hundreds-of-cisco-customers-are-vulnerable-to-new-chinese-hacking-campaign-researchers-say/
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Hackers Leverage Gladinet Triofox 0-Day Vulnerability to Run Malicious Code
Tags: attack, cve, cyber, exploit, flaw, hacker, infrastructure, malicious, remote-code-execution, threat, vulnerability, zero-dayA critical remote code execution vulnerability in Gladinet Triofox is now under active exploitation by threat actors, and security researchers have demonstrated that weaponizing the flaw requires far more sophistication than initial analyses suggest. CVE-2025-12480, tracked by UNC6485, represents a complex attack chain that involves multiple infrastructure challenges and technical hurdles attackers must overcome to…
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China-linked APT UAT-9686 is targeting Cisco Secure Email Gateway and Secure Email and Web Manager
Cisco disclosed a critical zero-day (CVE-2025-20393) in Secure Email Gateway and Secure Email and Web Manager, actively exploited by a China-linked group. Cisco disclosed a critical zero-day, tracked as CVE-2025-20393, in Secure Email Gateway and Secure Email/Web Manager, which is actively exploited by a China-linked threat group. Cisco reported a December 10 campaign targeting certain…
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WatchGuard Zero-Day Actively Exploited to Seize Control of Firewalls
WatchGuard has issued an urgent warning regarding a critical zero-day vulnerability in its Firebox firewall appliances that is currently being exploited in the wild. The flaw, tracked as CVE-2025-14733, allows remote attackers to seize control of affected devices without needing any authentication. Technical Details and Impact The vulnerability is an Out-of-Bounds Write flaw located in the iked process, which handles…