Act
active
PHP2Shell RCE Flaws Targeted by Mass Mirai Campaign
- Engineer — Act: Active mass exploitation attempts targeting CVE-2026-109618 and CVE-2026-109619 (CVSS 9.2) with public PoCs on GitHub make patching urgent even though current attacks are reportedly unsuccessful; apply PHP patches for both CVEs now and confirm no internet-facing PHP instances remain on vulnerable versions.
- SOC/IR — Act: Millions of in-progress exploit attempts against PHP deployments attempting to install the Potassium Mirai variant provide a clear detection surface; hunt for HTTP request patterns matching known PHP2Shell exploitation attempts and sweep for Mirai/Potassium C2 beaconing from PHP server hosts since campaign start.
- Leader — Plan: A mass-scale campaign against widely deployed PHP infrastructure warrants confirming internal PHP exposure this quarter; exploitation is currently failing and neither CVE is KEV-listed, so no board brief is needed yet, but track for escalation if successful compromises are confirmed.
- Signals: CVE-2026-109618 — CISA KEV: not listed, EPSS 0.12, public PoC on GitHub, reported by 5 collected sources · CVE-2026-109619 — CISA KEV: not listed, EPSS 0.06, public PoC on GitHub, reported by 5 collected sources
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