CVE-2021-44228

🛡️ CVE-2021-44228: Análise do Log4Shell - A Vulnerabilidade que Revolucionou a Segurança Java Impacto Crítico CVSS 10.0 | Descoberta em 2021, esta falha no Apache Log4j permite execução remota de código RCE e afeta milhões de sistemas globalmente. Ainda hoje, é um lembrete chave para a...

JndiLookup

JndiLookup Ein Tool zur Unterstützung bei der Analyse von Apache Log4j 2 CVE-2021-44228 Dieses Tool nutzt die „Lookup“-Funktion von log4j-2, um gegen die JNDI-Schwachstelle zu testen. Das Ziel ist es, die Lookup-Funktion einfach auszuführen z. B. um Logs zu normalisieren oder um einen echten Test...

CVE-2021-44228-PoC

Selbstständige Lab-Umgebung PoC, die eine Reverse-Shell mit Log4Shell CVE-2021-44228 ausführt Dies ist eine eigenständige Lab-Umgebung, die den Exploit sicher ausführt, alles mit Docker Compose. Die betroffenen Versionen sind Apache Log4j =2.0–2.14.1 und die CVE wird als CVE-2021-44228 CVSS-Score...

how-to-check-patch-secure-log4j-CVE-2021-44228

Come-verificare-log4j-CVE-2021-44228 Cos'è log4j ? LOG4J è un software Apache open-source basato su Java utilizzato per i servizi di logging. Cos'è la vulnerabilità log4j CVE-2021-44228 ? La vulnerabilità Log4j consente l'esecuzione remota di codice semplicemente digitando una specifica stringa i...

CVE-2021-44228

CVE-2021-44228 Apache Log4j 2 Versioni vulnerabili: Le versioni di Log4j precedenti alla 2.15.0-rc2 sono soggette a una vulnerabilità di esecuzione di codice remoto tramite il parser ldap JNDI. Vai alla riproduzione dell'issue Vai alla riproduzione della vulnerabilità...

Unity Linux 20.1050e / 20.1060e / 20.1070-8ae / 20.1070e Security Update: log4j (UTSA-2026-005302)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005302 advisory. Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle...

MINI-MGWH-PV97-W83H

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Unity Linux 20.1070e Security Update: log4j (UTSA-2026-099511)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099511 advisory. Apache Log4j's JsonTemplateLayout https://logging.apache.org/log4j/2.x/manual/json-template-layout.html , in versions up to and including 2.25.3, produces invalid JS...

MINI-5MPP-5QXG-QV2P

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ROS-20260813-73-0050

The vulnerability of the verifyHostName configuration parameter in the Apache Log4j Core logging library is related to errors in the certificate validation process. Exploiting this vulnerability allows a malicious actor to carry out a “man-in-the-middle” attack remotely...

org.apache.logging.log4j: Apache Log4j JsonTemplateLayout: Denial of Service via invalid JSON output

A flaw was found in Apache Log4j's JsonTemplateLayout. This vulnerability allows a remote attacker to disrupt log processing systems. By sending log events that include specific non-numeric floating-point values, the attacker can cause the JsonTemplateLayout to generate invalid JSON output. This...

Improper Encoding Or Escaping Of Output

Apache Log4j API is vulnerable to Improper Encoding or Escaping of Output. The vulnerability is due to improper encoding of non-finite floating-point values during MapMessage JSON serialization, which allows an attacker to inject NaN or Infinity values that produce malformed JSON and disrupt...

Security Bulletin: IBM Storage Protect Data Protection for Virtual Environments uses Apache Log4j version that is vulnerable to log injection via CRLF sequences due to undocumented renames of security-relevant configuration attributes ( CVE-2026-34478)

Summary IBM Storage Protect Data Protection for Virtual Environments uses Apache Log4j version that is vulnerable to log injection via CRLF sequences due to undocumented renames of security-relevant configuration attributes. This issue has been fixed in this release by incorporating the Apache...

OESA-2026-3153 log4j security update

Log4j is a tool to help the programmer output log statements to a variety of output targets. Security Fixes: Apache Log4j's JsonTemplateLayout in versions up to and including 2.25.3 produces invalid JSON output when log events contain non-finite floating-point values NaN, Infinity, or -Infinity,...

Oracle Primavera Unifier (July 2026 CPU)

The versions of Primavera Unifier installed on the remote host are affected by multiple vulnerabilities as referenced in the July 2026 CPU advisory. - Vulnerability in the Primavera Unifier product of Oracle Construction and Engineering component: Integration Lodash. Supported versions that are...

Apache Log4j 2.13.1 < 2.25.5 / 2.26.0 < 2.26.1 Improper JSON Serialization (CVE-2026-49844)

The version of Apache Log4j on the remote host is affected by a vulnerability: - Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces output that is not valid JSON. When a MapMessage contains a non-finite IEEE 754 value NaN,...

GHSA-QV9R-C865-CP47 Apache Log4j API: Improper encoding of non-finite floating-point values during MapMessage JSON serialization

Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces output that is not valid JSON. This issue affects Apache Log4j API versions 2.13.1 through 2.25.4 and version 2.26.0. The fix for CVE-2026-34481 did not cover all code paths: wh...

org.apache.logging.log4j/log4j-core: Apache Log4j Core: Invalid XML output causes denial of service in logging

A flaw was found in Apache Log4j Core. The XmlLayout component, responsible for formatting log messages into XML, does not properly remove or replace characters that are not allowed in XML 1.0. When log messages or diagnostic information contain these forbidden characters, the resulting XML outpu...

Security Bulletin: The Apache Log4J 2 package that is shipped with IBM ApplinX is vulnerable to multiple vulnerabilities (CVE-2026-34480, CVE-2026-34477, CVE-2026-34478, CVE-2026-34479).

Summary The Apache Log4J 2 package that is shipped with IBM ApplinX is vulnerable to an Improper Encoding or Escaping of Output vulnerability, an Improper Validation of Certificate with Host Mismatch vulnerability and an Improper Output Neutralization for Logs vulnerability CVE-2026-34480,...

Security Bulletin: IBM App Connect for Manufacturing is vulnerable to multiple vulnerabilities due to Apache Log4j and Bouncy Castle.

Summary IBM App Connect for Manufacturing is vulnerable to multiple vulnerabilities due to Apache Log4j and Bouncy Castle. Vulnerability Details CVEID:CVE-2026-34477 DESCRIPTION: The fix for CVE-2025-68161 https://logging.apache.org/security.htmlCVE-2025-68161 was incomplete: it addressed hostnam...