CVE-2025-7709: sqlite fts5 Integer Overflow or Wraparound

Vulnerability summary

CVE-2025-7709 is a medium (CVSS 6.9) Integer Overflow or Wraparound vulnerability in sqlite fts5. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.4% of scored vulnerabilities.

Timeline

1. 08-09-2025
   PublishedVulnerability first disclosed.
2. 18-11-2025
   Last modifiedVulnerability information updated.

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.

• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.