// #actively-exploited
28 articles — page 2 of 2
CISA Adds Eight CVEs to KEV: PaperCut, JetBrains TeamCity, and Cisco SD-WAN Actively Exploited
CISA's April 20 Known Exploited Vulnerabilities addition is the largest single-day batch this month, confirming active exploitation across enterprise print management, CI/CD pipelines, content management, and Cisco SD-WAN infrastructure. The batch spans CVE publication years from 2023 to 2026, demonstrating that unpatched legacy vulnerabilities continue to be weaponised alongside newly disclosed flaws. Federal agencies face a BOD 22-01 remediation deadline, and private sector organisations should treat these as immediate prioritisation signals.
Two Unpatched Windows Defender Zero-Days (RedSun + UnDefend) Actively Exploited — No Fix Available
A security researcher released two additional Windows Defender zero-days — RedSun and UnDefend — after Microsoft failed to patch them. RedSun exploits Defender's cloud file rollback mechanism to achieve SYSTEM privileges on all supported Windows versions. UnDefend silently prevents Defender from updating its threat signatures. Both are confirmed exploited in the wild, and neither has a patch or assigned CVE.
nginx-ui CVE-2026-33032 Actively Exploited — Unauthenticated Full Server Takeover
A critical authentication bypass vulnerability (CVSS 9.8) in the nginx-ui web management interface allows any network attacker to take complete control of the underlying Nginx server without credentials. Over 2,600 instances are internet-exposed and the flaw is being actively exploited. Update to version 2.3.4 immediately.
Google Patches Two Actively Exploited Chrome Zero-Days — CISA Orders Federal Agencies to Update by 27 March
Google released an emergency Chrome update on 13 March addressing two zero-day vulnerabilities — an out-of-bounds write in Skia and a V8 sandbox escape — both confirmed as exploited in the wild. CISA added both to the Known Exploited Vulnerabilities catalogue the same day with a 27 March federal remediation deadline.