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Heavy patch week if you ship IoT on FreeRTOS or run Windows containers: five FreeRTOS CVEs across three bulletins, an ECS Agent command injection to SYSTEM, a WorkSpaces local-privilege escalation. AWS CIRT publishes the March 2026 attacker-technique catalog with three notable new entries. Audit Manager officially closes to new customers. The What's Next with AWS 2026 event lands with the OpenAI partnership.
OpenAI GPT-5.5, GPT-5.4, and Codex reach general availability on Amazon Bedrock under the same governance controls as the rest of AWS. Amazon Cognito adds near-real-time multi-Region replication of identities and credentials, Bedrock AgentCore Identity integrates Secrets Manager, and two new CVEs hit Kiro IDE and Graph Explorer.
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