Incidents by attack type:
The National Association of Insurance Commissioners disclosed on 23 June 2026 that attackers exploited an Oracle PeopleSoft zero-day to access part of its environment, and by 25 June the extortion group ShinyHunters had published the stolen data online, claiming more than 3.1 terabytes.
Researchers disclosed a Microsoft Defender privilege-escalation zero-day dubbed RoguePlanet (CVE-2026-47281) that abuses a race condition to redirect a SYSTEM-level file operation and hand a local attacker full SYSTEM access on fully updated Windows machines.
Oracle issued an emergency out-of-band alert after the ShinyHunters crew exploited a critical unauthenticated remote-code-execution zero-day in PeopleSoft PeopleTools to steal data from more than 100 organisations, most of them universities.
Google shipped an emergency Chrome update fixing CVE-2026-11645, a high-severity out-of-bounds memory flaw in the V8 engine that lets a crafted web page run arbitrary code and for which an exploit already exists in the wild.
Check Point disclosed that attackers, including a Qilin ransomware affiliate, were actively exploiting a critical authentication-bypass zero-day (CVE-2026-50751) in its Remote Access and Mobile Access VPN products to log in without a valid password.
Cisco warned that an unpatched high-severity zero-day in Catalyst SD-WAN Manager (CVE-2026-20245) was being actively exploited to execute arbitrary commands and escalate to root, after Mandiant reported a limited number of real-world attacks.
Google's June 2026 Android security update fixed 124 vulnerabilities, including CVE-2025-48595, an actively exploited integer-overflow flaw in the Android Framework that lets a local attacker escalate privileges without user interaction.
Cl0p exploited CVE-2023-34362 in Progress Software's MOVEit Transfer to mass-extort over 2,700 organizations, including the BBC, British Airways, and the U.S. Department of Energy.
A trivially exploitable remote code execution flaw in Apache Log4j 2, the ubiquitous Java logging library, scored a maximum CVSS 10.0 and exposed hundreds of millions of devices and applications worldwide to instant takeover via a single crafted log string.
China-linked group Hafnium chained four Exchange Server zero-days (ProxyLogon) to plant web shells and steal email; after Microsoft's emergency patch, mass exploitation by multiple groups compromised an estimated 60,000+ organisations worldwide.