Signal
21 articles covering "zero-day"
Arctic Wolf found attackers abusing a critical 9.8-CVSS FortiClient EMS authentication bypass to silently push EKZ Infostealer to every managed endpoint via legitimate VPN scripting workflows.
A directory traversal flaw in Trend Micro Apex One lets an attacker with admin server access inject malicious code into managed endpoints. CISA added it to KEV on May 21 with a June 4 federal deadline.
Google's Threat Intelligence Group says a cybercrime group built a zero-day exploit using AI, marking the first confirmed case of adversaries weaponizing an LLM to discover and exploit a previously unknown vulnerability.
A researcher named Chaotic Eclipse released a working exploit for an unpatched Windows privilege escalation flaw in the Cloud Filter driver, confirmed to grant SYSTEM access on fully patched Windows 11.
DEVCORE took the top prize with $505,000 and 50.5 points after three days at OffensiveCon, where 47 unique zero-days in Windows, Exchange, VMware, and AI tools earned researchers $1,298,250.
Microsoft has disclosed an actively exploited cross-site scripting flaw in on-premises Exchange Server's Outlook Web Access. No patch has shipped; CISA gave federal agencies until May 29 to apply mitigations.
Ivanti disclosed an actively exploited authenticated RCE in Endpoint Manager Mobile alongside four other high-severity flaws. CISA added it to KEV on May 7 with a May 10 federal patch deadline.
A CVSS 9.8 CRLF-injection bug in cPanel and WHM let unauthenticated attackers gain root, exploited since February 23 against roughly 1.5 million exposed servers and now weaponized against governments in Southeast Asia.
A researcher's protest disclosure turned Microsoft Defender's remediation engine into an attack vector, with two of three zero-days remaining unpatched as ransomware actors move in.
Adobe says CVE-2026-34621 is under active exploitation in Acrobat and Reader; the flaw can lead to arbitrary code execution and prompted a CISA KEV deadline.
April's update is Microsoft's second-largest Patch Tuesday on record, with 8 critical flaws, two zero-days, and privilege escalation bugs accounting for well over half of the patches.
Google patches CVE-2026-5281, a use-after-free in Chrome's Dawn WebGPU layer exploited in the wild, marking the fourth Chrome zero-day of 2026. CISA gives federal agencies until April 15 to update.