Integer overflow in Postgresql
CVE-2025-12818
Integer wraparound in multiple PostgreSQL libpq client library functions allows an application input provider or network peer to cause libpq to undersize an allocation and write out-of-bounds by hundreds of megabytes. This results in a se…
Vulnerability class: Integer Overflow
EPSS: 0.003 (21.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- N/a Postgresql — versions 18, 17, 16
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-12818?
- CVE-2025-12818 is a medium-severity vulnerability in Postgresql, classified under Integer Overflow or Wraparound. CVSS score: 5.9/10. Published 2025-11-13.
- How severe is CVE-2025-12818?
- Medium severity. CVSS v3 base score is 5.9 out of 10.