What’s Vulnerable › Vulnerabilities

CVE-2021-32028

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-11 · updated 2026-06-17
• Weakness: CWE-200

Description

A flaw was found in postgresql. Using an INSERT ... ON CONFLICT ... DO UPDATE command on a purpose-crafted table, an authenticated database user could read arbitrary bytes of server memory. The highest threat from this vulnerability is to data confidentiality.

Affected products

• PostgreSQL: from 9.6.0 before 9.6.22; from 10.0 before 10.17; from 11.0 before 11.12; from 12.0 before 12.7; from 13.0 before 13.3 — fixed in 10.17, 11.12, 12.7, 13.3, 9.6.22

How to fix

Upgrade to a fixed version: PostgreSQL 10.17, 11.12, 12.7, 13.3. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1956877
• https://security.gentoo.org/glsa/202211-04
• https://security.netapp.com/advisory/ntap-20211112-0003/
• https://www.postgresql.org/support/security/CVE-2021-32028
• https://bugzilla.redhat.com/show_bug.cgi?id=1956877
• https://security.gentoo.org/glsa/202211-04
• https://security.netapp.com/advisory/ntap-20211112-0003/
• https://www.postgresql.org/support/security/CVE-2021-32028

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