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Exploiting the PAN-OS GlobalProtect VPN vulnerability requires certain conditions, but adversaries have done so in two attack waves that started in mid-May.
Rapid7: Attackers exploit authentication bypass flaw in the wild, meaning more emergency patching for PAN-OS users
CVE-2026-0257 lets attackers forge Palo Alto GlobalProtect auth cookies and bypass VPN login. Exploitation confirmed since May 17. Palo Alto Networks addressed the vulnerability CVE-2026-0257 on May 13. Two weeks later, cybersecurity firm Rapid7 confirmed active exploitation across multiple customer environments. The flaw impacts the GlobalProtect portal and gateway components of Palo Alto Networks PAN-OS […]
Palo Alto Networks is warning that hackers are now exploiting a PAN-OS GlobalProtect authentication bypass flaw, tracked as CVE-2026-0257, in attacks attempting to breach corporate networks. [...]
Palo Alto Networks has warned that a recently disclosed medium-severity security flaw impacting PAN-OS and Prisma Access has come under active exploitation in the wild