CVE-2026-39987: Marimo RCE Zero-Day Exploited Within 10 Hours of Disclosure — 662 Attacks Recorded
A critical unauthenticated RCE vulnerability in the Marimo Python notebook framework (CVE-2026-39987) was actively exploited just 10 hours after public disclosure. Sysdig recorded 662 exploit events over four...
Critical Fortinet FortiClient EMS Vulnerability CVE-2026-21643 Actively Exploited — CISA Demands Patch Today
CISA has added CVE-2026-21643, a critical pre-authentication SQL injection flaw in Fortinet FortiClient EMS (CVSS 9.1), to its Known Exploited Vulnerabilities catalog with a mandatory patching deadline of...
Adobe Acrobat Zero-Day CVE-2026-34621: Four Months of Targeted Espionage via Prototype Pollution Exploit
Adobe patched a critical zero-day in Acrobat Reader (CVE-2026-34621) that was exploited for at least four months via a sophisticated prototype pollution technique. The attack chain enables full...
Microsoft April 2026 Patch Tuesday: 163 CVEs Including Two Zero-Days and a Public “BlueHammer” Exploit
Microsoft's April 2026 Patch Tuesday addresses 163 CVEs, including an actively exploited SharePoint spoofing zero-day (CVE-2026-32201) and a publicly leaked Defender EoP exploit dubbed "BlueHammer" (CVE-2026-33825). A critical...
Google Patches Actively Exploited Chrome Zero-Day CVE-2026-5281 — CISA Deadline Hits Today
Google has patched a high-severity use-after-free zero-day in Chrome's WebGPU implementation (CVE-2026-5281) that is actively exploited in the wild. CISA set a mandatory federal remediation deadline of April...
Critical Marimo Python Notebook Zero-Day (CVE-2026-39987) Exploited Within 10 Hours of Disclosure
A critical pre-authentication RCE vulnerability (CVE-2026-39987, CVSS 9.3) in the popular Marimo Python notebook platform was weaponised within 10 hours of public disclosure. Attackers are actively harvesting credentials,...
Fortinet Issues Emergency Patch for Actively Exploited FortiClient EMS Zero-Day CVE-2026-35616
A critical zero-day vulnerability (CVE-2026-35616, CVSS 9.1) in Fortinet FortiClient EMS was exploited in the wild before Fortinet published its advisory. The pre-authentication flaw allows remote code execution...
PoC Exploit Leaked for Unpatched Windows Privilege Escalation Zero-Day ‘BlueHammer’
A disgruntled researcher has published a working exploit for BlueHammer, an unpatched Windows local privilege escalation zero-day that abuses Windows Defender's update mechanism. Fully patched Windows 10, 11,...