A heap buffer overflow vulnerability has been discovered in SQLite versions prior to 3.53.2, triggered via the Full-Text Search 5 (FTS5) extension’s fts5ChunkIterate function. An attacker able to supply crafted SQL queries could potentially exploit this to corrupt memory, leading to application crashes or arbitrary code execution. Given SQLite’s widespread use across cloud services, applications, and managed databases, the blast radius is significant.

Security Architect’s Take: Audit your Azure workloads and application dependencies for any SQLite versions below 3.53.2, paying particular attention to services using FTS5 full-text search. Prioritise patching container images, serverless functions, and any managed services that bundle SQLite, and verify whether Microsoft has issued updated platform components for affected Azure services.

Original advisory: CVE-2026-11824 SQLite before 3.53.2 Heap Buffer Overflow via FTS5 fts5ChunkIterate