CVE-2021-44228 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-44228CRITICAL

Apache Log4j2

  AV  AC  PR  UI  S  C  I  A   CVSS     EPSS    %ile   KEV
   N   L   N   N  C  H  H  H   10.0   1.0000   100.0   YES

AFFECTED
  Product  Versions     Fixed
  Log4j2   unspecified  —

TIMELINE
  Dec 10  Added to CISA KEV, remediation due 2021-12-24
  Dec 10  Published
  Aug 11  ENRICHED — CVE-2021-44228 (Apache Log4j2). Received CVSS 10.0 and CPE data from NVD.
  Aug 11  EXPLOIT PUBLISHED — CVE-2021-44228 (Apache Log4j2). Public exploit reference added.

CWE-20, CWE-400, CWE-502, CWE-917 · CVSS v3.1 · 52 references · NVD status: Analyzed · KEV due December 24, 2021

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
December 10, 2021	KEV ADDED	Added to CISA KEV, remediation due 2021-12-24
December 10, 2021	Published	Published
August 11, 2026	ENRICHED	ENRICHED — CVE-2021-44228 (Apache Log4j2). Received CVSS 10.0 and CPE data from NVD.
August 11, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2021-44228 (Apache Log4j2). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Apache	Log4j2	—	—	—

Weaknesses

CWE-20 · CWE-400 · CWE-502 · CWE-917

References (52)

http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165260/VMware-Security-Advisory-2021-0028.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165261/Apache-Log4j2-2.14.1-Information-Disclosure.html [Exploit, Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165270/Apache-Log4j2-2.14.1-Remote-Code-Execution.html [Exploit, Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165281/Log4j2-Log4Shell-Regexes.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165282/Log4j-Payload-Generator.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165306/L4sh-Log4j-Remote-Code-Execution.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165307/Log4j-Remote-Code-Execution-Word-Bypassing.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165311/log4j-scan-Extensive-Scanner.html [Broken Link, Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165371/VMware-Security-Advisory-2021-0028.4.html [Exploit, Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165532/Log4Shell-HTTP-Header-Injection.html [Exploit, Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165642/VMware-vCenter-Server-Unauthenticated-Log4Shell-JNDI-Injection-Remote-Code-Execution.html [Exploit, Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/165673/UniFi-Network-Application-Unauthenticated-Log4Shell-Remote-Code-Execution.html [Exploit, Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/167917/MobileIron-Log4Shell-Remote-Command-Execution.html [Exploit, Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/171626/AD-Manager-Plus-7122-Remote-Code-Execution.html [Third Party Advisory, VDB Entry]
http://seclists.org/fulldisclosure/2022/Dec/2 [Exploit, Mailing List, Third Party Advisory]
http://seclists.org/fulldisclosure/2022/Jul/11 [Mailing List, Third Party Advisory]
http://seclists.org/fulldisclosure/2022/Mar/23 [Mailing List, Third Party Advisory]
http://www.openwall.com/lists/oss-security/2021/12/10/1 [Mailing List, Mitigation, Third Party Advisory]
http://www.openwall.com/lists/oss-security/2021/12/10/2 [Mailing List, Mitigation, Third Party Advisory]
http://www.openwall.com/lists/oss-security/2021/12/10/3 [Mailing List, Third Party Advisory]
http://www.openwall.com/lists/oss-security/2021/12/13/1 [Mailing List, Third Party Advisory]
http://www.openwall.com/lists/oss-security/2021/12/13/2 [Mailing List, Third Party Advisory]
http://www.openwall.com/lists/oss-security/2021/12/14/4 [Mailing List, Third Party Advisory]
http://www.openwall.com/lists/oss-security/2021/12/15/3 [Mailing List, Third Party Advisory]
https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdf [Third Party Advisory]
https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf [Third Party Advisory]
https://cert-portal.siemens.com/productcert/pdf/ssa-661247.pdf [Third Party Advisory]
https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdf [Third Party Advisory]
https://github.com/cisagov/log4j-affected-db [Third Party Advisory]
https://github.com/cisagov/log4j-affected-db/blob/develop/SOFTWARE-LIST.md [Broken Link, Product, US Government Resource]
https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-44228 [Exploit, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2021/12/msg00007.html [Mailing List, Third Party Advisory]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5CSVUNV4HWZZXGOKNSK6L7RPM7BOKIB/ [Release Notes]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VU57UJDCFIASIO35GC55JMKSRXJMCDFM/ [Release Notes]
https://logging.apache.org/log4j/2.x/security.html [Release Notes, Vendor Advisory]
https://msrc-blog.microsoft.com/2021/12/11/microsofts-response-to-cve-2021-44228-apache-log4j2/ [Patch, Third Party Advisory, Vendor Advisory]
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032 [Third Party Advisory]
https://security.netapp.com/advisory/ntap-20211210-0007/ [Third Party Advisory]
https://support.apple.com/kb/HT213189 [Third Party Advisory]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd [Third Party Advisory]
https://twitter.com/kurtseifried/status/1469345530182455296 [Broken Link, Exploit, Third Party Advisory]
https://www.bentley.com/en/common-vulnerability-exposure/be-2022-0001 [Third Party Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-44228 [Third Party Advisory, US Government Resource]
https://www.debian.org/security/2021/dsa-5020 [Mailing List, Third Party Advisory]
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00646.html [Third Party Advisory]
https://www.kb.cert.org/vuls/id/930724 [Third Party Advisory, US Government Resource]
https://www.nu11secur1ty.com/2021/12/cve-2021-44228.html [Exploit, Third Party Advisory]
https://www.oracle.com/security-alerts/alert-cve-2021-44228.html [Third Party Advisory]
https://www.oracle.com/security-alerts/cpuapr2022.html [Patch, Third Party Advisory]
https://www.oracle.com/security-alerts/cpujan2022.html [Patch, Third Party Advisory]

Authoritative record: CVE-2021-44228 at cve.org

Vendors: apache

Weaknesses: CWE-20 · CWE-400 · CWE-502 · CWE-917

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-44228 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.

Lifecycle

Affected

Weaknesses

References (52)

Related

About this page