SQLite before 3.53.2 contains a heap-based buffer overflow vulnerability in the FTS5 full-text search extension that allows attackers to cause a crash or execute arbitrary code by supplying a crafted database with malicious continuation page metadata specifying a szLeaf value smaller than 4. Attackers can trigger an integer underflow in fts5ChunkIterate() causing an inflated remaining byte count during FTS5 MATCH query processing, leading to a heap buffer overflow of attacker-controlled data in applications compiled with SQLITE_ENABLE_FTS5.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://sqlite.org/src/info/061febcf41ca Issue Tracking, Patch
- https://sqlite.org/src/info/4a5ad516ea93 Issue Tracking, Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.5 · sqliteNVD modified 2026-10-15 02:18
Affected (CPE criteria) 1
cpe:2.3:a:sqlite:sqlite:*:*:*:*:*:*:*:*
References 5
- https://sqlite.org/releaselog/3_53_2.html Release Notes
- https://sqlite.org/src/info/061febcf41ca Issue Tracking, Patch
- https://sqlite.org/src/info/4a5ad516ea93 Issue Tracking, Patch
- https://www.vulncheck.com/advisories/sqlite-before-heap-buffer-overflow-via-fts5-fts5chunkiterate Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-765416.html