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Several ransomware groups are exploiting CVE-2026-0257, an authentication bypass in Palo Alto Networks’ PAN-OS GlobalProtect patched in May, to break into organizations in sectors ranging from healthcare and education to government and energy.
Summary
CVE-2026-0257 stems from the firewalls relying on cookies without performing detailed validation and integrity checking, which allows remote, unauthenticated attackers to bypass security restrictions and establish an unauthorized VPN connection.
This is a brief wire summary, the full story (linked below) has the complete details.
KazaSec's take
Incidents like this rarely start with the headline event itself, they usually trace back to an exposed remote-access endpoint, an unpatched perimeter system, or a credential phished weeks earlier. The organizations that recover fastest are the ones that tested their defenses and their incident response plan before they needed them.
Coverage details
We've archived 806 other articles touching the same topic (vpn, vulnerability, don't miss) , see the full security news archive.
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