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Vulnerability record · public intelligence
CVE-2021-44228
CRITICALCISA KEV

Remote code injection in Log4j

Published Dec 10, 2021 · Updated Nov 3, 2026

Severity · CVSSCRITICAL · Not scored
Known exploitationCISA KEV listed
EPSS / likelihood100.00%
QFinch risk scoreNot available

Original summary

Normalized public record · Updated Nov 3, 2026

Remote code injection in Log4j

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

# Summary

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

CISA-KEVFIRST-EPSSCVE-LIST-V5
SSVC priority
IMMEDIATE
Confidence
Not available
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. logging.apache.org ↗
  2. [oss-security] 20211210 CVE-2021-44228: Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints ↗
  3. [oss-security] 20211210 Re: CVE-2021-44228: Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints ↗
  4. 20211210 Vulnerability in Apache Log4j Library Affecting Cisco Products: December 2021 ↗
  5. [oss-security] 20211210 Re: CVE-2021-44228: Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints ↗
  6. security.netapp.com ↗
  7. packetstormsecurity.com ↗
  8. psirt.global.sonicwall.com ↗
  9. www.oracle.com ↗
  10. DSA-5020 ↗
  11. [debian-lts-announce] 20211212 [SECURITY] [DLA 2842-1] apache-log4j2 security update ↗
  12. FEDORA-2021-f0f501d01f ↗

Record history

Published Dec 10, 2021 · Last refreshed Nov 3, 2026

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