UpHeron
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Servers and applications

CVE-2021-44228

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…

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 10 Dec 2021.

Severity
Critical 10.0
Published
10 Dec 2021
Last changed
11 Aug 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.3.1, 2.12.2, 2.15.0
Sources
NVD

Affected software

SoftwareAffected versions
Apache Log4jServers and applications · cpe:a:apache:log4j
  • From 2.13.0 before 2.15.0
  • From 2.4.0 before 2.12.2
  • From 2.0.1 before 2.3.1
  • Version 2.0
All 7 release lines
  • Version 2.0-beta9
  • Version 2.0-rc1
  • Version 2.0-rc2
  • Version 2.0
  • From 2.0.1 before 2.3.1
  • From 2.4.0 before 2.12.2
  • From 2.13.0 before 2.15.0

Known exploited

CISA name
Apache Log4j2 Remote Code Execution Vulnerability
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…
Due for US agencies
24 Dec 2021
Used in ransomware
Yes, known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-44228
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-44228