CVE-2021-44228

10.0 CRITICAL CISA KEV - Actively Exploited

Published: December 10, 2021 Modified: October 27, 2025

Description

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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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.html

Source: security@apache.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165260/VMware-Security-Advisory-2021-0028.html

Source: security@apache.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165261/Apache-Log4j2-2.14.1-Information-Disclosure.html

Source: security@apache.org

Exploit Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165270/Apache-Log4j2-2.14.1-Remote-Code-Execution.html

Source: security@apache.org

Exploit Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165281/Log4j2-Log4Shell-Regexes.html

Source: security@apache.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165282/Log4j-Payload-Generator.html

Source: security@apache.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165306/L4sh-Log4j-Remote-Code-Execution.html

Source: security@apache.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165307/Log4j-Remote-Code-Execution-Word-Bypassing.html

Source: security@apache.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165311/log4j-scan-Extensive-Scanner.html

Source: security@apache.org

Broken Link Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165371/VMware-Security-Advisory-2021-0028.4.html

Source: security@apache.org

Exploit Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165532/Log4Shell-HTTP-Header-Injection.html

Source: security@apache.org

Exploit Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165642/VMware-vCenter-Server-Unauthenticated-Log4Shell-JNDI-Injection-Remote-Code-Execution.html

Source: security@apache.org

Exploit Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/165673/UniFi-Network-Application-Unauthenticated-Log4Shell-Remote-Code-Execution.html

Source: security@apache.org

Exploit Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html

Source: security@apache.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/167917/MobileIron-Log4Shell-Remote-Command-Execution.html

Source: security@apache.org

Exploit Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/171626/AD-Manager-Plus-7122-Remote-Code-Execution.html

Source: security@apache.org

Third Party Advisory VDB Entry

http://seclists.org/fulldisclosure/2022/Dec/2

Source: security@apache.org

Exploit Mailing List Third Party Advisory

http://seclists.org/fulldisclosure/2022/Jul/11

Source: security@apache.org

Mailing List Third Party Advisory

http://seclists.org/fulldisclosure/2022/Mar/23

Source: security@apache.org

Mailing List Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/12/10/1

Source: security@apache.org

Mailing List Mitigation Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/12/10/2

Source: security@apache.org

Mailing List Mitigation Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/12/10/3

Source: security@apache.org

Mailing List Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/12/13/1

Source: security@apache.org

Mailing List Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/12/13/2

Source: security@apache.org

Mailing List Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/12/14/4

Source: security@apache.org

Mailing List Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/12/15/3

Source: security@apache.org

Mailing List Third Party Advisory

https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf

Source: security@apache.org

Third Party Advisory

https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf

Source: security@apache.org

Third Party Advisory

https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf

Source: security@apache.org

Third Party Advisory

https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf

Source: security@apache.org

Third Party Advisory

https://github.com/cisagov/log4j-affected-db

Source: security@apache.org

Third Party Advisory

https://github.com/cisagov/log4j-affected-db/blob/develop/SOFTWARE-LIST.md

Source: security@apache.org

Broken Link Product US Government Resource

https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-44228

Source: security@apache.org

Exploit Third Party Advisory

https://lists.debian.org/debian-lts-announce/2021/12/msg00007.html

Source: security@apache.org

Mailing List Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5CSVUNV4HWZZXGOKNSK6L7RPM7BOKIB/

Source: security@apache.org

Release Notes

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VU57UJDCFIASIO35GC55JMKSRXJMCDFM/

Source: security@apache.org

Release Notes

https://logging.apache.org/log4j/2.x/security.html

Source: security@apache.org

Release Notes Vendor Advisory

https://msrc-blog.microsoft.com/2021/12/11/microsofts-response-to-cve-2021-44228-apache-log4j2/

Source: security@apache.org

Patch Third Party Advisory Vendor Advisory

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032

Source: security@apache.org

Third Party Advisory

https://security.netapp.com/advisory/ntap-20211210-0007/

Source: security@apache.org

Third Party Advisory

https://support.apple.com/kb/HT213189

Source: security@apache.org

Third Party Advisory

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd

Source: security@apache.org

Third Party Advisory

https://twitter.com/kurtseifried/status/1469345530182455296

Source: security@apache.org

Broken Link Exploit Third Party Advisory

https://www.bentley.com/en/common-vulnerability-exposure/be-2022-0001

Source: security@apache.org

Third Party Advisory

https://www.debian.org/security/2021/dsa-5020

Source: security@apache.org

Mailing List Third Party Advisory

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html

Source: security@apache.org

Third Party Advisory

https://www.kb.cert.org/vuls/id/930724

Source: security@apache.org

Third Party Advisory US Government Resource

https://www.nu11secur1ty.com/2021/12/cve-2021-44228.html

Source: security@apache.org

Exploit Third Party Advisory

https://www.oracle.com/security-alerts/alert-cve-2021-44228.html

Source: security@apache.org

Third Party Advisory

https://www.oracle.com/security-alerts/cpuapr2022.html

Source: security@apache.org

Patch Third Party Advisory

https://www.oracle.com/security-alerts/cpujan2022.html

Source: security@apache.org

Patch Third Party Advisory

http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.html