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CVE-2025-7709: Out Of Bounds write in FTS5 Extension in SQLite

• Severity: medium (CVSS 6.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-08 · updated 2026-06-17
• Weakness: CWE-190

Description

An integer overflow exists in the FTS5 https://sqlite.org/fts5.html  extension. It occurs when the size of an array of tombstone pointers is calculated and truncated into a 32-bit integer. A pointer to partially controlled data can then be written out of bounds.

Affected products

• SQLite FTS5: 3.49.1 < 3.50

References

• https://github.com/google/security-research/security/advisories/GHSA-v2c8-vqqp-hv3g
• http://www.openwall.com/lists/oss-security/2025/09/06/2
• http://www.openwall.com/lists/oss-security/2025/11/18/10

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