Cybersecurity

CVE-2026-0257: Rapid7 Caught Attackers Abusing Forged VPN Cookies Against Multiple Customers

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A critical authentication bypass vulnerability in Palo Alto GlobalProtect, identified as CVE-2026-0257, is being actively exploited to establish unauthorized VPN connections through forged cookies. The flaw allows attackers to bypass security restrictions in seconds by leveraging shared certificates used for both HTTPS services and cookie encryption. Security professionals must immediately upgrade to patched versions or isolate certificate usage to prevent threat actors from gaining direct access to internal enterprise networks.

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