Vulnerability Database

346,508

Total vulnerabilities in the database

CVE-2021-44832 — apache / log4j

Improper Input Validation

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 v3:

  • Severity: Medium
  • Score: 6.6
  • AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: High
  • Score: 8.5
  • AV:N/AC:M/Au:S/C:C/I:C/A:C
Software From Fixed in
apache / log4j 2.0-rc1 2.0-rc1.x
apache / log4j 2.0-beta9 2.0-beta9.x
apache / log4j 2.0-rc2 2.0-rc2.x
apache / log4j 2.0-beta8 2.0-beta8.x
apache / log4j 2.0-beta7 2.0-beta7.x
apache / log4j 2.0 2.0.x
apache / log4j 2.13.0 2.17.1
apache / log4j 2.4 2.12.4
apache / log4j 2.0.1 2.3.2
oracle / weblogic_server 12.2.1.3.0 12.2.1.3.0.x
oracle / primavera_unifier 18.8 18.8.x
oracle / weblogic_server 12.2.1.4.0 12.2.1.4.0.x
oracle / primavera_unifier 19.12 19.12.x
oracle / weblogic_server 14.1.1.0.0 14.1.1.0.0.x
oracle / primavera_unifier 20.12 20.12.x
oracle / communications_interactive_session_recorder 6.3 6.3.x
oracle / communications_interactive_session_recorder 6.4 6.4.x
oracle / primavera_gateway 17.12.0 17.12.11.x
oracle / primavera_gateway 20.12.0 20.12.7.x
oracle / retail_assortment_planning 16.0.3 16.0.3.x
oracle / primavera_unifier 21.12 21.12.x
oracle / primavera_p6_enterprise_project_portfolio_management 21.12.0.0 21.12.0.0.x
oracle / primavera_p6_enterprise_project_portfolio_management 20.12.0.0 20.12.12.0.x
oracle / primavera_gateway 21.12.0 21.12.0.x
oracle / primavera_gateway 19.12.0 19.12.12.x
oracle / primavera_gateway 18.8.0 18.8.13.x
oracle / retail_fiscal_management 14.2 14.2.x
oracle / primavera_p6_enterprise_project_portfolio_management 19.12.0 19.12.18.0.x
oracle / siebel_ui_framework 21.12 21.12.x
oracle / communications_diameter_signaling_router 8.0.0.0 8.5.1.0.x
cisco / cloudcenter 4.10.0.16 4.10.0.16.x
fedoraproject / fedora 34 34.x
fedoraproject / fedora 35 35.x
debian / debian_linux 9.0 9.0.x
oracle / flexcube_private_banking 12.1.0 12.1.0.x
oracle / retail_order_broker 18.0 18.0.x
oracle / retail_xstore_point_of_service 17.0.4 17.0.4.x
oracle / retail_xstore_point_of_service 18.0.3 18.0.3.x
oracle / retail_xstore_point_of_service 19.0.2 19.0.2.x
oracle / retail_xstore_point_of_service 20.0.1 20.0.1.x
oracle / retail_order_broker 19.1 19.1.x
oracle / siebel_ui_framework - 21.12.x
oracle / primavera_p6_enterprise_project_portfolio_management 19.12.0.0 19.12.18.0.x
oracle / communications_diameter_signaling_router 8.3.0.0 8.5.1.0.x
oracle / policy_automation 12.2.0 12.2.24.x
oracle / product_lifecycle_analytics 3.6.1 3.6.1.x
oracle / health_sciences_data_management_workbench 2.5.2.1 2.5.2.1.x
oracle / communications_brm_-_elastic_charging_engine 12.0.0.5.0 12.0.0.5.0.x
oracle / communications_brm_-_elastic_charging_engine - 12.0.0.4.6
oracle / retail_xstore_point_of_service 21.0.1 21.0.1.x
oracle / policy_automation_for_mobile_devices 12.2.0 12.2.24.x
oracle / health_sciences_data_management_workbench 3.0.0.0 3.0.0.0.x
oracle / health_sciences_data_management_workbench 3.1.0.3 3.1.0.3.x
oracle / communications_offline_mediation_controller 12.0.0.5.0 12.0.0.5.0.x
oracle / communications_offline_mediation_controller - 12.0.0.4.4
Maven icon org.apache.logging.log4j / log4j-core 2.0-beta7 2.3.2
Maven icon org.apache.logging.log4j / log4j-core 2.4 2.12.4
Maven icon org.apache.logging.log4j / log4j-core 2.13.0 2.17.1

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.