CVE-2021-32027: PostgreSQL

High severity, CVSS 8.8. EPSS: 2% chance of exploitation in the next 30 days.

A flaw was found in postgresql in versions before 13.3, before 12.7, before 11.12, before 10.17 and before 9.6.22. While modifying certain SQL array values, missing bounds checks let authenticated database users write arbitrary bytes to a wide area of server memory. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Affected products

• PostgreSQL PostgreSQL: from 9.6.0, before 9.6.22 (fixed in 9.6.22); from 10.0, before 10.17 (fixed in 10.17); from 11.0, before 11.12 (fixed in 11.12); from 12.0, before 12.7 (fixed in 12.7); from 13.0, before 13.3 (fixed in 13.3)
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only
• Red Hat JBoss Enterprise Application Platform: version 7.0.0 only
• Red Hat Software Collections: affected versions not specified

Published 2021-06-01. Last modified 2026-06-17.