Integer overflow in PostgreSQL - CVE-2025-12818
Published: November 13, 2025
Vulnerability identifier: #VU118520
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-12818
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PostgreSQL Global Development Group
Affected software:
PostgreSQL
PostgreSQL
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in multiple PostgreSQL libpq client library functions. A remote user can pass specially crafted data to the application, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2025-12818
Install updates from vendor's website.