CVE-2025-4207 is a buffer over-read vulnerability in PostgreSQL's GB18030 encoding validation, affecting versions prior to 17.5, 16.9, 15.13, 14.18, and 13.21. This flaw allows an unauthenticated attacker to trigger a temporary denial of service on the database server and libpq, particularly on systems where a 1-byte over-read causes process termination. Rated Medium (CVSS 5.9), the attack requires high complexity but no user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| N/A | PostgreSQL | >= 0, < 13.21, >= 14, < 14.18, >= 15, < 15.13, >= 16, < 16.9, >= 17, < 17.5CNA affecteddefault unaffected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
May 13, 2025postgresql: PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
May 8, 2025PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
Jan 1, 2025PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation