CVE-2025-4207

Medium severity, CVSS 5.9. EPSS: 0.8% chance of exploitation in the next 30 days.

Buffer over-read in PostgreSQL GB18030 encoding validation allows a database input provider to achieve temporary denial of service on platforms where a 1-byte over-read can elicit process termination. This affects the database server and also libpq. Versions before PostgreSQL 17.5, 16.9, 15.13, 14.18, and 13.21 are affected.

Published 2025-05-08. Last modified 2026-06-17.