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Lead Story
Lazarus Exploits Windows Zero-Day to Gain SYSTEM Access and Deploy Backdoor
The Hacker News reports that Lazarus exploited a newly patched Windows flaw as a zero-day to gain SYSTEM access and deliver a previously unseen backdoor to defense and aerospace companies in France, Germany, Brazil and India.
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Why it matters: A state actor with a working privilege escalation exploit moves fast once inside.
Recommended action: Prioritize the August Windows updates on defense and aerospace engineering systems.
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Original source: The Hacker News
Also Worth Your Attention
Microsoft patches LegacyHive Windows zero-day vulnerability
Microsoft’s August updates fix LegacyHive, CVE-2026-62832, a Windows User Profile Service flaw disclosed with a public exploit after July’s Patch Tuesday. It needs credentials for a second local account and leads to admin rights when an administrator logs in.
Why it matters: Shared machines where admins log in, such as jump hosts and terminal servers, are most exposed.
Recommended action: Patch multi-user systems first and run the published LegacyHive detection queries.
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Attackers Exploit SharePoint Authentication Bypass After Public PoC Release
Attackers began exploiting SharePoint authentication bypass CVE-2026-55040 (CVSS 9.1) after Rapid7 published a proof-of-concept. KEVIntel saw 12 attempts since July 19, eight of them on August 12 and 13.
Why it matters: It is the fifth SharePoint flaw exploited this year.
Recommended action: Confirm July’s SharePoint update on every farm server and check for new site administrators.
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Critical VMware vCenter RCE flaw exploited for reverse SSH access
QUIRSO says attackers are exploiting vCenter Syslog flaw CVE-2026-59310, fixed on July 29, to install reverse_ssh. By August 7 it had counted 361 attacking IPs in 47 countries.
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Why it matters: A backdoor installed before patching survives the update.
Recommended action: Upgrade vCenter and run QUIRSO’s YARA rule against appliances that were unpatched after July 29.
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DeadLock ransomware: Breaking down a Rust-based encryptor with decentralized recovery infrastructure
Microsoft Threat Intelligence profiles DeadLock, a ransomware operation that pairs a Rust-based encryptor with decentralized infrastructure for victim communication, negotiation and data leaks.
Why it matters: Infrastructure that is hard to take down keeps extortion pressure on victims longer.
Recommended action: Make sure ransomware playbooks cover data-leak extortion, not just encryption.
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