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Attackers are exploiting Palo Alto Networks defect that initially flew under the radar

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Attackers are exploiting Palo Alto Networks defect that initially flew under the radar Researchers and threat hunters are scrambling to respond to an actively exploited authentication-bypass vulnerability affecting Palo Alto Networks customers’ firewalls. The company initially tagged CVE-2026-0257 with a medium-severity rating when it disclosed the defect May 13, but quickly reassessed it as criti...
This incident underscores a recurring pattern in cybersecurity: the rapid weaponization of vulnerabilities that initially appear less severe. The initial medium-severity rating of CVE-2026-0257 likely contributed to delayed responses, as organizations often prioritize critical vulnerabilities. The attackers' focus on opportunistic initial access rather than long-term espionage suggests a shift toward exploiting low-hanging fruit—vulnerabilities that are easy to exploit but may be overlooked due ...