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Zero Day

26 articles tagged with "Zero Day"

APT28 Linked to MSHTML Zero-Day Exploited Before Patch
Threat Intelligence4 min read

APT28 Linked to MSHTML Zero-Day Exploited Before Patch

Security researchers tie Russia's APT28 to CVE-2026-21513 exploitation using malicious LNK files. The MSHTML zero-day was weaponized weeks before Microsoft's February patch.

Alex KowalskiMar 3, 2026
China's UNC3886 Breached All Four Singapore Telcos
Threat Intelligence3 min read

China's UNC3886 Breached All Four Singapore Telcos

Singapore confirms China-linked APT compromised M1, Singtel, StarHub, and SIMBA using zero-day exploits and rootkits. 11-month Operation Cyber Guardian response disclosed.

Alex KowalskiFeb 14, 2026
Microsoft Patches Six Zero-Days in February Patch Tuesday
Vulnerabilities4 min read

Microsoft Patches Six Zero-Days in February Patch Tuesday

Microsoft's February 2026 Patch Tuesday fixes 59 flaws including six actively exploited zero-days. CrowdStrike confirmed CVE-2026-21533 was used in attacks targeting US and Canada since December.

Marcus ChenFeb 12, 2026
Chinese APT Used VMware ESXi Zero-Days to Escape VMs
Threat Intelligence4 min read

Chinese APT Used VMware ESXi Zero-Days to Escape VMs

Huntress researchers discover 'MAESTRO' toolkit exploiting three VMware vulnerabilities. Attackers chained SonicWall VPN access with hypervisor escape to deploy persistent backdoors.

Alex KowalskiJan 13, 2026
CVSS 10.0 Zero-Day Hits 70,000 XSpeeder Devices
Vulnerabilities4 min read

CVSS 10.0 Zero-Day Hits 70,000 XSpeeder Devices

CVE-2025-54322 enables unauthenticated root RCE on SD-WAN appliances and edge routers. Vendor has ignored seven months of disclosure attempts. No patch available.

Marcus ChenJan 1, 2026