← Global Threat Landscape

CVE-2021-44228

CWE-20

Critical

105.0

RPS

Description

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.

Source: NVD

Signals

CVSS
10.0
Critical · v3.1
EPSS
99.99%
Probability of exploitation in the next 30 days (FIRST)
CISA KEV
In CISA KEV since Dec 2021
Fix commit
Fix commit known
Sources: MoreFixes, FreshFixes
Weakness
CWE-20
CWE-20, CWE-917
Published
10 Dec 2021
Last modified 11 Aug 2026

How to read these signals: RPS · EPSS · CISA KEV · Data sources

Get this score from the API

curl -H "Authorization: Bearer dsec_live_xxxxxxxx" \
  https://api.intelligence.devsecure.io/api/v1/rps/CVE-2021-44228

Replace the placeholder with your key. Get a free API key or rank your own CVEs.

Data as of 7 Oct 2026, 05:16 UK time