CVE-2021-20227

20

FAUCET Score

CVE-2021-20227 is a use-after-free vulnerability in SQLite's SELECT query functionality, affecting SQLite and Oracle products. An attacker with local SQL query execution capabilities can trigger this flaw, leading to a denial of service or potential code execution. The vulnerability has a CVSS score of 5.5 (Medium), indicating a low attack complexity and requiring local access, with the primary impact being high availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 3.33.0, < 3.34.1CPE matchmatch criteria	cpe:2.3:a:sqlite:sqlite::::::::
		>= 12.0.1.0, <= 12.0.4.0.0CPE matchmatch criteria	cpe:2.3:a:oracle:communications_network_charging_and_control::::::::
		6.0.1CPE matchmatch criteria	cpe:2.3:a:oracle:communications_network_charging_and_control:6.0.1:::::::*
		13.4.0.0CPE matchmatch criteria	cpe:2.3:a:oracle:enterprise_manager_for_oracle_database:13.4.0.0:::::::*
		< 9.2.6.0CPE matchmatch criteria	cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools::::::::

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Exploitability Score

1.8

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.50%

Probability of exploitation in next 30 days

EPSS Percentile

39.7%

Percentile rank of EPSS score among Peer Group

As of 2026-07-28

Model: v2026.06.15

This CVE's current EPSS score of 0.0050 is in the 92nd percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (17)

microsoftpatch availablevia msrc

Product: sqlite-debuginfo-3.34.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: 14335-12137Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: 14336-12137Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: 14337-12137Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: 14338-12137Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: 14339-12138Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: 14340-12138Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: 14341-12138Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: 14342-12138Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: sqlite-3.34.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: sqlite-devel-3.34.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: sqlite-libs-3.34.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: sqlite-debuginfo-3.34.1-1.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: sqlite-3.34.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: sqlite-devel-3.34.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 3.34.1-1

microsoftpatch availablevia msrc

Product: sqlite-libs-3.34.1-1.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 3.34.1-1

oraclepatch availablevia nvd_reference

Vendor Advisories (2)

microsoft2021-Mar/CVE-2021-20227

A flaw was found in SQLite's SELECT query functionality (src/select.c). This flaw allows an attacker who is capable of running SQL queries locally on the SQLite database to cause a denial of service or possible code execution by triggering a use-after-free. The highest threat from this vulnerability is to system availability.

redhatCVE-2021-20227Moderate

sqlite: potential use-after-free bug when processing a subquery with both a correlated WHERE clause and a "HAVING 0" clause and where the parent query is an aggregate

References

bugzilla.redhat.com / show_bug.cgi

Issue TrackingThird Party Advisory

security.gentoo.org / glsa/202103-04

Third Party Advisory

security.gentoo.org / glsa/202210-40

Third Party Advisory

security.netapp.com / advisory/ntap-20210423-0010

Third Party Advisory

oracle.com / security-alerts/cpuApr2021.html

PatchThird Party Advisory

oracle.com / /security-alerts/cpujul2021.html

PatchThird Party Advisory

oracle.com / security-alerts/cpuoct2021.html

PatchThird Party Advisory

sqlite.org / releaselog/3_34_1.html

Release NotesVendor Advisory