Vulnerability intelligence

CVE-2023-5869

Red Hat Red Hat Advanced Cluster Security 4.2 CWE-190

A flaw was found in PostgreSQL that allows authenticated database users to execute arbitrary code through missing overflow checks during SQL array value modification. This issue exists due to an integer overflow during array modification where a remote user can trigger the overflow by providing specially crafted data. This enables the execution of arbitrary code on the target system, allowing users to write arbitrary bytes to memory and extensively read the server's memory.

CVSS Score

8.8

High

EPSS — Exploit Probability

4.3%

Riskier than 91% of all CVEs · checked 2026-09-08

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

Patch available

Vendor fix published