Live › vulnerability › CVE-2021-44228
Go to dashboardApache Log4j2 logging library evaluates JNDI lookups in logged messages, so attacker-controlled input can make the server load and run remote code. An attacker gets code execution on any server that logs their input.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
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.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Apache Log4j2 | vendor | – | – |
Search for log4j-core jars in application directories and fat jars (for example: find / -name log4j-core*.jar 2>/dev/null) and check their version.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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 controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3, and 2.3.1), this functionality has been completely removed. Note that this vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.
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