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CVE Intel / CVE-2021-44228

CVE-2021-44228

6bk1602-0aa12-0tp0 · apache, apple, bentley, cisco, debian, fedoraproject, intel, netapp, percussion, siemens, snowsoftware, sonicwall
CISA KEVexploited on our sensorsCritical network detectable

What it is

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.

Live exploitation on the huntback network (30 days)

2
attempts captured
2
distinct source IPs
2026-09-15
last seen
huntback carries a network signature for this CVE. Exploitation attempts are detected on the decoy fleet in real time.

How huntback helps

Deploy a decoy that emulates 6bk1602-0aa12-0tp0 and you will see every attempt at this CVE the moment it lands, with the full payload, the attacker's infrastructure, and any stage-2 loader. Then huntback can scan the attacker back.

CVSSn/a Critical
EPSS1.00 (99% pct)
In CISA KEVyes
Publishedn/a
Network detectableyes, signatured

Related

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