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f5.com · exploit público critical

React2Shell (CVE-2025-55182) mass exploitation: RondoDox, credential stealers and reverse shells observed in December 2025

F5 Labs, using Efflux sensor telemetry, analyzed December 2025 exploitation of React2Shell (CVE-2025-55182), a CVSS 10.0 unsafe deserialization RCE in React Server Components. It was disclosed on 3 December 2025 and rose to second place among the most exploited CVEs, behind only CVE-2017-9841. Within days of disclosure, actors moved from …

securityweek.com · · 28 fontes · 46 atualizações exploit público critical

PHP2Shell: critical PHP RCE flaws CVE-2026-109618/109619 patched; mass exploitation attempts, Potassium Mirai botnet, European sites offline; separate unpatched CVE-2026-115560 disclosed

The PHP security team released emergency fixes on October 21, 2026 for two critical core flaws, CVE-2026-109618 and CVE-2026-109619, nicknamed PHP2Shell. Both are rated CVSS v4.0 9.2 and allow unauthenticated remote code execution (RCE) as the web worker account. They can also expose process memory that may hold credentials and API keys (…