Is CVE-2021-44228 actively exploited?

Yes. CVE-2021-44228 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-44228 be exploited remotely?

The attack vector of CVE-2021-44228 has not been classified yet.

What is the CVSS score of CVE-2021-44228?

CVE-2021-44228 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-44228

HIGHCISA KEVIN THE WILD

CVE-2021-44228

Published: December 10, 2021

EPSS:94.36%probability of exploitation in 30 daysPercentile:100.0th

Official Description

Apache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.

NVD Source

CISA KEV Advisory

Apache Log4j2 Remote Code Execution Vulnerability

Apache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.

Added to KEV: 2021-12-10Federal patch deadline: 2021-12-24⚠ USED IN RANSOMWARE CAMPAIGNS

Required Action (CISA)

For 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.

Risk Analysis

Apache Log4j2 has a critical vulnerability where JNDI features do not adequately protect against attacker-controlled JNDI endpoints, leading to remote code execution. The extremely high EPSS score of 0.94358 indicates a very high likelihood of exploitation, and its presence in the KEV catalog confirms active exploitation.

This vulnerability is actively exploited in the wild. The flaw allows for remote code execution by manipulating JNDI lookups.

Recommended Action

Update Apache Log4j2 to a patched version (2.17.1 or later) to prevent remote code execution. Implement network filtering to block outbound JNDI requests from vulnerable systems.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-44228 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-44228 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.