Bulletins on critical vulnerabilities, exploitation analyses and alerts tracked as they break. Microsoft Patch Tuesday, the CISA KEV catalogue, CERT-FR and CERT-UA advisories, actively exploited zero-days, Sigma, YARA and Suricata detection rules, and patch prioritisation.
Executive SummaryFollowing the actively exploited vulnerability in Citrix NetScaler (CVE-2025-7775), this summary provides an overview of the technical details and the associated risks. The flaw, a critical memory overflow, has been added by CISA to its Known Exploited Vulnerabilities (KEV) catalog due to confirmed in-the-wild exploitation. It allows unauthenticated remote code execution on vulnerable appliances,…
Summary: I analyzed the Vulnerability Summary for the Week of July 21, 2025 published by CISA. This bulletin lists 176 new vulnerabilities discovered that week. In this article, I present all these vulnerabilities in a factual and structured manner, organized by affected product or vendor. For each product, you’ll find the CVE identifier, CVSS severity…
I have reviewed the CISA bulletin of newly reported vulnerabilities for the week of July 14, 2025. It is a compilation of recently discovered flaws, mostly classified as critical (CVSS score 7.0–10.0). As a CERT manager, I am providing here a detailed analysis of these vulnerabilities. I have grouped them by vendor, highlighting each flaw…
This article presents an analysis by CERT-UA (the Ukrainian national CERT) of activities linked to APT28. Between March and April 2024, a sophisticated multi-stage cyberoperation targeted Ukrainian government agencies (central executive authorities). The attack is attributed to threat actor UAC-0001, also known internationally as APT28 or Fancy Bear, known for advanced espionage campaigns. Discovery of…
