No exploitation reportedFix available

CVE-2021-32027

Q: Is CVE-2021-32027 actively exploited?

Active exploitation of CVE-2021-32027 has not been confirmed. Its EPSS score was 2.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-32027?

CVE-2021-32027 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-06-01
Fixed in13.3 · 13.3.0 · 12.7 · 12.7.0 · 11.12 · 11.12.0
WeaknessCWE-190

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2021-06-0114:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-32027?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-32027?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

PostgreSQL

Branch	Affected	Fixed in	Source
13.x	≥ 13.0, < 13.3	13.3	NVD
13.x	≥ 13.0.0, < 13.3.0	13.3.0	OSV
12.x	≥ 12.0, < 12.7	12.7	NVD
12.x	≥ 12.0.0, < 12.7.0	12.7.0	OSV
11.x	≥ 11.0, < 11.12	11.12	NVD
11.x	≥ 11.0.0, < 11.12.0	11.12.0	OSV
10.x	≥ 10.0, < 10.17	10.17	NVD
10.x	≥ 10.0.0, < 10.17.0	10.17.0	OSV
9.6	≥ 9.6.0, < 9.6.22	9.6.22	NVD · OSV

Redhat enterprise linux

Branch	Affected	Fixed in	Source
7.0	= 7.0	no fix published	NVD
8.0	= 8.0	no fix published	NVD

Redhat jboss enterprise application platform

Branch	Affected	Fixed in	Source
7.0	= 7.0.0	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

pgauditAlmaLinux:8all versions · fixed in 1.5.0-1.module_el8.5.0+2607+8c0fd184
pgauditAlmaLinux:8all versions · fixed in 1.5.0-1.module_el8.6.0+2760+1746ec94
postgres-decoderbufsAlmaLinux:8all versions · fixed in 0.10.0-2.module_el8.5.0+2607+8c0fd184
postgres-decoderbufsAlmaLinux:8all versions · fixed in 0.10.0-2.module_el8.6.0+2758+4f4474df
postgres-decoderbufsAlmaLinux:8all versions · fixed in 0.10.0-2.module_el8.6.0+2760+1746ec94
postgresqlAlmaLinux:8all versions · fixed in 9.6.22-1.module_el8.4.0+2479+beebcf7eand 10 other packages
postgresqlAlmaLinux:8all versions · fixed in 9.6.22-1.module_el8.4.0+2492+beebcf7eand 10 other packages
postgresqlAlmaLinux:8all versions · fixed in 9.6.22-1.module_el8.5.0+58+52470387and 10 other packages

Vendor advisories

ICSA-22-298-04 CISA1 known affected
Hitachi Energy MicroSCADA X DMS600
DMS600 - DMS600: Version 4.5

Full record on NVD

Fix

Update PostgreSQL to 13.3 · 13.3.0 · 12.7 · 12.7.0 · 11.12 · 11.12.0 · 10.17 · 10.17.0
Mitigation from the vendor CISA ICSA-22-298-04 · 1 productHitachi Energy DMS600: Update to v4.6.
Mitigation from the vendor CISA ICSA-22-298-04 · 1 productNote: In DMS600, PostgreSQL is deployed and accessible only from the local host. Remote connections are not allowed by default.
Mitigation from the vendor CISA ICSA-22-298-04 · 1 productRecommended security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct conne…
Mitigation from the vendor CISA ICSA-22-298-04 · 1 productFor more information, see Hitachi Energy advisory 8DBD000102.

Advisories and patches

bugzilla.redhat.comPatch
www.postgresql.orgVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.06.5read 2026-10-23
CNAweakness (CWE)CWE-190read 2026-10-23
FIRST EPSSEPSS score2.0 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2021-06-01
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-32027?

Is CVE-2021-32027 actively exploited?

Active exploitation of CVE-2021-32027 has not been confirmed. Its EPSS score was 2.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-32027?

CVE-2021-32027 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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