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CVE-2021-44832

Apache Log4j2 vulnerable to RCE via JDBC Appender when attacker controls configuration

Published: Dec 28, 2021Updated: May 29, 2026 Sources: CVE List NVD GHSA BDUCWE-20
NVD MITRE
6.6CVSSMEDIUM
EPSS Score
98.1%
Top 0.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Apache Log4j2 versions 2.0-beta7 through 2.17.0 (excluding security fix releases 2.3.2 and 2.12.4) are vulnerable to a remote code execution (RCE) attack when a configuration uses a JDBC Appender with a JNDI LDAP data source URI when an attacker has control of the target LDAP server. This issue is fixed by limiting JNDI data source names to the java protocol in Log4j2 versions 2.17.1, 2.12.4, and 2.3.2.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-20CWE-74

Affected Products

log4japache
LibraryLibrary
OSS Libraries / generic-library
communications diameter signaling routeroracle
On-prem
Databases / cache-message-queue
communications interactive session recorderoracle
On-prem
Databases
primavera gatewayoracle
On-prem
Databases / relational
primavera p6 enterprise project portfolio managementoracle
On-premWeb App
Enterprise Software / erp
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
oraclecommercialUSDatabasesaka oracle corp.
and 37 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

http://www.openwall.com/lists/oss-security/2021/12/28/1
openwall.com
https://cert-portal.siemens.com/productcert/pdf/ssa-784507.pdf
cert-portal.siemens.com
https://issues.apache.org/jira/browse/LOG4J2-3293
issues.apache.org
and 27 more references View all →

Timeline

Published
Dec 28, 2021
Last Updated
May 29, 2026

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