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CVE-2026-50751 is a vulnerability classified as Improper Authentication, affecting Quantum Security Gateway (affected versions: R82.10 with Jumbo Hotfix Take 19 or below, R82 with Jumbo Hotfix Take 103 or below, and other affected versions) and Spark Firewalls (affected versions: R80.20.X, R81.10.X, and R82.00.X). This vulnerability is rated Critical, with a CVSS score of 9.3. This vulnerability has been observed being exploited in the wild.
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A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.
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