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ソフトウェアやハードウェアの脆弱性が発見された直後で、修正プログラムが未公開である状態を指す。脆弱性の修正手段が確立されるまでの期間が「0日」であることから「ゼロデイ（Zero-day）」...
Six 0-days, three under active exploitation, more to come on July 14?
Broken disclosure embargo left admins facing a fresh root-level flaw with no CVE
An Adobe Reader zero-day vulnerability is being actively exploited via malicious PDFs, allowing hackers to steal data without user interaction, with no patch available.
A security researcher operating under the alias “Chaotic Eclipse” has publicly released a proof-of-concept (PoC) exploit for a vulnerability in Microsoft Defender. Published on Apr...
Microsoft has disclosed two new zero-day vulnerabilities in Microsoft Defender that are actively being exploited in the wild, raising concerns among security professionals and ente...
CISA added the flaw to KEV after Fortinet confirmed exploitation in the wild Fortinet released an emergency patch over the weekend for a critical FortiClient Enterprise Management...
Threat actors have been exploiting a previously unknown zero-day vulnerability in Adobe Reader using maliciously crafted PDF documents since at least December 2025. The finding, de...
Исследователь безопасности выложил в сеть код эксплойта нулевого дня для Windows, получившего название BlueHammer. Причиной такого радикального шага стал конфликт специалиста с Цен...
Internet-facing PAN-OS firewalls are once again doing impressions of initial access brokers
No zero-day flaws were addressed in May’s Patch Tuesday update but as usual there is much for admins to chew over in the coming days
A state-sponsored threat actor known as UAT-4356 is actively exploiting known vulnerabilities in Cisco Firepower devices to deploy a sophisticated custom backdoor. UAT-4356 exploit...
Microsoft on Tuesday released updates to address a record 169 security flaws across its product portfolio, including one vulnerability that has been actively exploited in the wild....
Pwn2Own Berlin 2026 reportedly reached full capacity for the first time, prompting rejected researchers to publicly disclose zero-day exploits targeting Firefox, NVIDIA, and AI pla...
Security researchers at EXPMON have uncovered a highly sophisticated, unpatched zero-day vulnerability actively targeting Adobe Reader users. The exploit, first detected in the wil...
A critical zero-day vulnerability, tracked as CVE-2026-41940, is currently being actively exploited across the web hosting industry. This CVSS 9.8 flaw allows unauthenticated remot...
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