Oracle's October patch update fixes 1,295 flaws, six rated maximum severity

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Oracle released its October 2026 Critical Patch Update on 20 October, addressing 1,295 vulnerabilities across its product lines. Six of these carry the top CVSS v3.1 score of 10.0 and can be exploited remotely without authentication. One flaw in E-Business Suite's Workflow Notification Mailer, versions 12.2.3 to 12.2.15, lets an unauthenticated attacker take over Workflow and possibly affect other products. The guidance stresses that WebLogic's T3 and IIOP protocols, which are often poorly monitored and loosely firewalled, are a common path to exposure. Administrators are advised to patch internet-facing and T3-exposed systems first and to restrict T3 and IIOP traffic at the network layer.

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