1CVE mirror · CIR-2021-1CVE-44228

CVE-2021-44228 Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.…

Read-only record, generated from public sources and never edited by hand. To add your own analysis, extend it in the builder with based_on: CIR-2021-1CVE-44228.

metaTLP:CLEAR

CIR-2021-1CVE-44228

status

published

created

2021-12-10

updated

2026-08-11

title

CVE-2021-44228: Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.…

coreTLP:CLEAR

summary

identifiers

CVE-2021-44228 cve.org

disclosed

2021-12-10

severity

10.0 cvss_v3.1 · nvd
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

weaknesses

CWE-20, CWE-400, CWE-502, CWE-917

details

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.

references 41

threat_intelTLP:CLEAR

kev

listed on 2021-12-10

in the wild

true

epss

100.0% percentile 100

updated

2026-10-16

public exploits 11

Scorescir-risk/0.1

Public priority10.0critical

Organizational risk–Needs your posture and context

6 / 6 points: severity + exploitation

YAMLCIR-2021-1CVE-44228.yml

# Generated by the cirsec.org 1CVE mirror from vuln.mlab.sh. Do not edit:
# extend it with meta.based_on: CIR-2021-1CVE-44228
cir_version: "0.5"

meta:
  id: CIR-2021-1CVE-44228
  revision: 1
  title: "CVE-2021-44228: Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.…"
  status: published
  created: 2021-12-10
  updated: 2026-08-11
  tlp: CLEAR

core:
  tlp: CLEAR
  summary: "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 control…"
  details: "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."
  disclosed: 2021-12-10
  identifiers:
    - { type: cve, id: CVE-2021-44228 }
  references:
    - { type: advisory, url: "http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.html" }
    - { type: advisory, url: "http://packetstormsecurity.com/files/165260/VMware-Security-Advisory-2021-0028.html" }
    - { type: advisory, url: "http://packetstormsecurity.com/files/165281/Log4j2-Log4Shell-Regexes.html" }
    - { type: advisory, url: "http://packetstormsecurity.com/files/165282/Log4j-Payload-Generator.html" }
    - { type: advisory, url: "http://packetstormsecurity.com/files/165306/L4sh-Log4j-Remote-Code-Execution.html" }
    - { type: advisory, url: "http://packetstormsecurity.com/files/165307/Log4j-Remote-Code-Execution-Word-Bypassing.html" }
    - { type: advisory, url: "http://packetstormsecurity.com/files/165311/log4j-scan-Extensive-Scanner.html" }
    - { type: advisory, url: "http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html" }
    - { type: advisory, url: "http://packetstormsecurity.com/files/171626/AD-Manager-Plus-7122-Remote-Code-Execution.html" }
    - { type: advisory, url: "http://seclists.org/fulldisclosure/2022/Jul/11" }
    - { type: advisory, url: "http://seclists.org/fulldisclosure/2022/Mar/23" }
    - { type: advisory, url: "http://www.openwall.com/lists/oss-security/2021/12/10/1" }
    - { type: advisory, url: "http://www.openwall.com/lists/oss-security/2021/12/10/2" }
    - { type: advisory, url: "http://www.openwall.com/lists/oss-security/2021/12/10/3" }
    - { type: advisory, url: "http://www.openwall.com/lists/oss-security/2021/12/13/1" }
    - { type: advisory, url: "http://www.openwall.com/lists/oss-security/2021/12/13/2" }
    - { type: advisory, url: "http://www.openwall.com/lists/oss-security/2021/12/14/4" }
    - { type: advisory, url: "http://www.openwall.com/lists/oss-security/2021/12/15/3" }
    - { type: advisory, url: "https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf" }
    - { type: advisory, url: "https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf" }
    - { type: advisory, url: "https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf" }
    - { type: advisory, url: "https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf" }
    - { type: advisory, url: "https://github.com/cisagov/log4j-affected-db" }
    - { type: web, url: "https://github.com/cisagov/log4j-affected-db/blob/develop/SOFTWARE-LIST.md" }
    - { type: advisory, url: "https://lists.debian.org/debian-lts-announce/2021/12/msg00007.html" }
    - { type: web, url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5CSVUNV4HWZZXGOKNSK6L7RPM7BOKIB/" }
    - { type: web, url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VU57UJDCFIASIO35GC55JMKSRXJMCDFM/" }
    - { type: advisory, url: "https://logging.apache.org/log4j/2.x/security.html" }
    - { type: fix, url: "https://msrc-blog.microsoft.com/2021/12/11/microsofts-response-to-cve-2021-44228-apache-log4j2/" }
    - { type: advisory, url: "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032" }
    - { type: advisory, url: "https://security.netapp.com/advisory/ntap-20211210-0007/" }
    - { type: advisory, url: "https://support.apple.com/kb/HT213189" }
    - { type: advisory, url: "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd" }
    - { type: advisory, url: "https://www.bentley.com/en/common-vulnerability-exposure/be-2022-0001" }
    - { type: advisory, url: "https://www.debian.org/security/2021/dsa-5020" }
    - { type: advisory, url: "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html" }
    - { type: advisory, url: "https://www.kb.cert.org/vuls/id/930724" }
    - { type: advisory, url: "https://www.oracle.com/security-alerts/alert-cve-2021-44228.html" }
    - { type: fix, url: "https://www.oracle.com/security-alerts/cpuapr2022.html" }
    - { type: fix, url: "https://www.oracle.com/security-alerts/cpujan2022.html" }
    - { type: advisory, url: "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-44228" }
  weaknesses: [CWE-20, CWE-400, CWE-502, CWE-917]
  severity:
    - type: cvss_v3.1
      vector: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
      score: 10.0
      source: nvd

threat_intel:
  tlp: CLEAR
  updated: 2026-10-16
  exploitation:
    maturity: poc
    in_the_wild: true
    exploits:
      - { type: poc, source: other, url: "http://packetstormsecurity.com/files/165261/Apache-Log4j2-2.14.1-Information-Disclosure.html" }
      - { type: poc, source: other, url: "http://packetstormsecurity.com/files/165270/Apache-Log4j2-2.14.1-Remote-Code-Execution.html" }
      - { type: poc, source: other, url: "http://packetstormsecurity.com/files/165371/VMware-Security-Advisory-2021-0028.4.html" }
      - { type: poc, source: other, url: "http://packetstormsecurity.com/files/165532/Log4Shell-HTTP-Header-Injection.html" }
      - { type: poc, source: other, url: "http://packetstormsecurity.com/files/165642/VMware-vCenter-Server-Unauthenticated-Log4Shell-JNDI-Injection-Remote-Code-Execution.html" }
      - { type: poc, source: other, url: "http://packetstormsecurity.com/files/165673/UniFi-Network-Application-Unauthenticated-Log4Shell-Remote-Code-Execution.html" }
      - { type: poc, source: other, url: "http://packetstormsecurity.com/files/167917/MobileIron-Log4Shell-Remote-Command-Execution.html" }
      - { type: poc, source: other, url: "http://seclists.org/fulldisclosure/2022/Dec/2" }
      - { type: poc, source: github, url: "https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-44228" }
      - { type: poc, source: other, url: "https://twitter.com/kurtseifried/status/1469345530182455296" }
      - { type: poc, source: other, url: "https://www.nu11secur1ty.com/2021/12/cve-2021-44228.html" }
  signals:
    kev: { listed: true, date_added: 2021-12-10 }
    epss: { score: 0.99999, percentile: 1 }

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