CVE•Published 2021-12-10•Modified 2026-08-11•3 articles on news•5 live references•NVD data

CVE-2021-44228Siemens · 6bk1602-0aa12-0tp0_firmware

Vulnerability data via NVD (ingested)

CVSS v3.1
10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS percentile
100
Exploit Prediction Scoring System · top 0% of all CVEs
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.

Timeline
Published 2021-12-10
Modified 2026-08-11

External references

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

More intel sources (5)

Known PoCs on GitHub (8)

projectdiscovery/nucleiGo
Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulner…
★ 32,012·updated today
imthenachoman/How-To-Secure-A-Linux-Serverunknown
An evolving how-to guide for securing a Linux server.
★ 31,810·updated 1mo ago
paralax/awesome-honeypotsPython
an awesome list of honeypot resources
★ 10,598·updated 4mo ago
Mr-xn/Penetration_Testing_POCHTML
渗透测试有关的POC、EXP、脚本、提权、小工具等---About penetration-testing python-script poc getshell csrf xss cms php-getshell domainmod-xss csrf-webshell cobub-razor cve rce sql sql-poc poc-exp bypas…
★ 7,512·updated today
Threekiii/Awesome-POCJava
一个漏洞 PoC 知识库。A knowledge base for vulnerability PoCs(Proof of Concept), with 1k+ vulnerabilities.
★ 5,219·updated 5mo ago
Astrosp/Awesome-OSINT-ListShell
📡 Comprehensive collection of OSINT tools for cybersecurity professionals, researchers, and bug bounty hunters. Topics: information gathering, reverse search, red team, trust & sa…
★ 4,532·updated 2d ago
Threekiii/Awesome-RedteamPython
一个攻防知识库。A knowledge base for red teaming and offensive security.
★ 4,344·updated 3mo ago
alexandreborges/malwoverviewPython
Malwoverview is a first response tool for threat hunting across VirusTotal, Hybrid Analysis, URLHaus, Polyswarm, Malshare, Alien Vault, Malpedia, Malware Bazaar, ThreatFox, Triage,…
★ 4,130·updated 3w ago