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Threat Brief: Active Exploitation of PAN-OS CVE-2026-0257 (Updated October 20)

Ransomware crews Qilin and Inc are actively exploiting CVE-2026-0257 on PAN-OS firewalls, turning unpatched Palo Alto appliances into a direct entry point for extortion campaigns against enterprises.

Summary written by editorial AI · Source link below

Filed by Unit 42 (Palo Alto)1 min readRead at source ↗

Ransomware operators including Spikey Scorpius (aka Qilin) and Tarnished Scorpius (aka Inc) are exploiting PAN-OS vulnerability CVE-2026-0257. The post Threat Brief: Active Exploitation of PAN-OS CVE-2026-0257 (Updated October 20) appeared first on Unit 42 .

Editorial Analysis

Why it matters

Perimeter firewalls are the last line of defence for many networks; active exploitation by multiple ransomware operators means unpatched PAN-OS devices represent an imminent breach risk.

What to do

Immediately patch or mitigate CVE-2026-0257 on all PAN-OS appliances and hunt for indicators of compromise published by Unit 42.

Board brief

Two ransomware gangs are actively breaching organisations through unpatched Palo Alto firewalls — confirm your estate is remediated.

Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.

Continue at the source
Read the full report at Unit 42 (Palo Alto)

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