Apache Log4j2 Remote Code Execution Vulnerability

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

• cpe apache/log4jversion unspecified
• cpe debian/debian linux9.0
• cpe intel/computer vision annotation toolversion unspecified
• cpe siemens/6bk1602-0aa12-0tp0 firmwareversion unspecified
• cpe siemens/6bk1602-0aa22-0tp0 firmwareversion unspecified
• cpe siemens/6bk1602-0aa32-0tp0 firmwareversion unspecified
• cpe siemens/6bk1602-0aa42-0tp0 firmwareversion unspecified
• cpe siemens/6bk1602-0aa52-0tp0 firmwareversion unspecified
• cpe siemens/capitalversion unspecified
• cpe siemens/sppa-t3000 ses3000 firmwareversion unspecified
• vendor Apache Log4j2version unspecified

How to fix CVE-2021-44228

• Recommended remediation

  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. CISA due date Dec 24, 2021.

• Official advisories

  • Apache Software Foundation · logging.apache.org
  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • Packet Storm Security · packetstormsecurity.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Dec 10, 2021 · Catalog

   Detected

   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 en

2. Dec 10, 2021 · CISA KEV

   Known exploited

   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.

3. Dec 24, 2021 · CISA KEV

   Remediation due

   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.

4. Aug 11, 2026 · Catalog

   Updated

   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 en

Sources

• Apache Software FoundationVendor advisoryCVE-2021-44228

  CVE-2021-44228 is named on the public Apache Software Foundation page.

  logging.apache.org
• CISA KEVConfirmed exploitationCVE-2021-44228

  Apache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.

  cisa.gov
• CVE.orgVulnerability recordCVE-2021-44228

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2021-44228

  30-day exploitation probability 100.0%

  first.org
• Exploit DatabasePublic exploit reference50590

  Public archive entry. The exploit body is not stored here.

  exploit-db.com
• Exploit DatabasePublic exploit reference50592

  Public archive entry. The exploit body is not stored here.

  exploit-db.com
• Exploit DatabasePublic exploit reference51183

  Public archive entry. The exploit body is not stored here.

  exploit-db.com
• Metasploit ModulesPublic exploit moduleauxiliary_scanner/http/log4shell_scanner

  Public module reference (normal). Module source is not copied into this catalog.

  rapid7.com
• Metasploit ModulesPublic exploit moduleexploit_linux/http/mobileiron_core_log4shell

  Public module reference (excellent). Module source is not copied into this catalog.

  rapid7.com
• Metasploit ModulesPublic exploit moduleexploit_multi/http/log4shell_header_injection

  Public module reference (excellent). Module source is not copied into this catalog.

  rapid7.com
• NIST NVDVulnerability recordCVE-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 messa

  nvd.nist.gov
• Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.html

  Packet Storm link already published on the finding.

  packetstormsecurity.com
• Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/165260/VMware-Security-Advisory-2021-0028.html

  Packet Storm link already published on the finding.

  packetstormsecurity.com
• Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/165261/Apache-Log4j2-2.14.1-Information-Disclosure.html

  Packet Storm link already published on the finding.

  packetstormsecurity.com
• Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/165270/Apache-Log4j2-2.14.1-Remote-Code-Execution.html

  Packet Storm link already published on the finding.

  packetstormsecurity.com
• VulnCheck KEVConfirmed exploitationCVE-2021-44228

  Apache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.

  vulncheck.com

References

• Third Party Advisory · packetstormsecurity.com
• Third Party Advisory · packetstormsecurity.com
• Exploit · packetstormsecurity.com
• Exploit · packetstormsecurity.com
• VulnCheck exploitation evidence · api.vulncheck.com
• VulnCheck exploitation evidence · blog.netlab.360.com
• VulnCheck exploitation evidence · cisa.gov
• Release Notes · logging.apache.org
• Patch · msrc-blog.microsoft.com
• CISA note · nvd.nist.gov
• VulnCheck exploitation evidence · cisa.gov
• VulnCheck exploitation evidence · microsoft.com
• VulnCheck exploitation evidence · microsoft.com

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.