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CVE-2021-3393

18
FAUCET Score

CVE-2021-3393 is an information leak vulnerability affecting PostgreSQL versions prior to 13.2, 12.6, and 11.11, as well as related Red Hat products. It allows a user with UPDATE but not SELECT permissions on a column to craft queries that can reveal column values in error messages. This medium-severity vulnerability (CVSS 4.3) has a low attack complexity and could lead to unauthorized disclosure of sensitive data. There is no evidence of active exploitation, public exploit code, or significant media coverage, though it has received some community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 11.11CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
>= 12.0, < 12.6CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
>= 13.0, < 13.2CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 79th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: postgresql:12-8040020210604112312.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: postgresql:12-8020020210602190140.4cda2c84
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-postgresql12-postgresql-0:12.7-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-postgresql12-postgresql-0:12.7-1.el7
View patch

Vendor Advisories (1)

redhatCVE-2021-3393Low

postgresql: Partition constraint violation errors leak values of denied columns

Feb 11, 2021

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
security.gentoo.org / glsa/202105-32
Third Party Advisory
security.netapp.com / advisory/ntap-20210507-0006
Third Party Advisory