CVE-2021-44228 — Apache Log4j2 Remote Code Execution Vulnerability

Impacted if

• Log4j < 2.3.1 · < 2.12.2 · < 2.15.0 +1
• and 142 other products

Expression language injection · over the network · no login

Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker control

CISA Known Exploited Vulnerabilities

Added on 2021-12-10, federal remediation due 2021-12-24. Apache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.

Required action: For all affected software assets for which updates exist, the only acceptable remediation actions are: 1) Apply updates; OR 2) remove affected assets from agency networks. Temporary mitigations using one of the measures provided at https://www.cisa.gov/uscert/ed-22-02-apache-log4j-recommended-mitigation-measures are only acceptable until updates are available.

First seen by AX-NEWS 13 Oct 2026, 00:00 UTC · latest story 13 Oct 2026, 00:00 UTC. Severity: NVD, or the CVE record while the NVD has not scored it. This product uses data from the NVD API but is not endorsed or certified by the NVD.