Act
active
Ransomware groups actively exploit PAN-OS CVE-2026-0257 (KEV, EPSS 0.97)
- Engineer — Act: PAN-OS is a common enterprise perimeter device; CISA KEV listing, EPSS 0.97, public PoC, and active ransomware exploitation all demand immediate action — patch PAN-OS to the vendor-specified fixed version now, and audit firewall management interfaces for signs of compromise before patching.
- SOC/IR — Act: Edge device exploitation by Qilin/Inc ransomware operators means assume-breach posture is warranted — sweep for IOCs published in the Unit 42 advisory, hunt for lateral movement or data staging activity originating from PAN-OS management plane since October 19, and tune EDR/SIEM for post-exploitation TTPs associated with these ransomware groups.
- Leader — Act: Active ransomware exploitation of a widely deployed enterprise firewall platform is a board-question-level event — confirm this week whether PAN-OS is in your estate, verify IR team is on heightened alert, and prepare a brief for leadership given the ransomware operators named are known for extortion and data theft.
- Signals: CVE-2026-0257 — CISA KEV: listed, EPSS 0.97, public PoC on GitHub
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