CVE-2021-44228
Apache Log4j2: Improper Input Validation
- Act now
- CVSS 10.0 Critical
- CISA KEV, due
- VulnCheck KEV
- ENISA exploited-vulnerability catalog
What it is
ReportedApache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.
Dates
What is affected
ReportedApache; Log4j2. Product-level identification only; no affected-version conclusion is available from this field.
Dates
Urgency and basis
Tracker computedAct now
Current priority score and EPSS: loading from the tracker record. They are read when this page loads and are not shown without JavaScript. They change daily and are not part of "Source last updated".
Dates
Exploitation evidence
ReportedActive exploitation · CISA KEV · VulnCheck KEV · ENISA exploited-vulnerability catalog
Dates
What to do
ReportedFor 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.
Source remediation ↗Dates
Detection and validation
Mapped metadata availability only. These signals do not change priority.
Sigma
LockerGoga Ransomware Activity. Level: critical. Status: stable.
Open Sigma metadataAtomic
Data Encrypted with GPG4Win. Executor: powershell. Elevation: not required.
Open Atomic metadataNuclei
Apache Log4j2 Remote Code Injection. Check identifier: CVE-2021-44228.
Open Nuclei metadata
Evidence detail
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