CVE-2026-3055: Critical Citrix NetScaler Memory Flaw Actively Exploited in the Wild

    Threat actors are actively exploiting CVE-2026-3055, a critical severity memory overread vulnerability in Citrix NetScaler ADC and NetScaler Gateway appliances. Security researchers at watchTowr have confirmed in-the-wild exploitation began at least March 27, 2026, with attackers extracting authenticated administrative session IDs that could enable full takeover of vulnerable devices. The Vulnerability CVE-2026-3055 is a memory…

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    Financially motivated threat actors misusing App Installer

    Read Article Since mid-November 2023, Microsoft Threat Intelligence has observed threat actors, including financially motivated actors like Storm-0569, Storm-1113, Sangria Tempest, and Storm-1674, utilizing the ms-appinstaller URI scheme (App Installer) to distribute malware. In addition to ensuring that customers are protected from observed attacker activity, Microsoft investigated the use of App Installer in these attacks. In response to this…

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