Log4Shell (CVE-2021-44228) is a vulnerability reported in November 2021 in Log4j, a popular Java logging framework, involving arbitrary code execution and exploited as a zero-day …

Log4Shell is a critical zero-day vulnerability (CVE-2021-44228) in Log4j that was uncovered in December 2021. It allows attackers to execute arbitrary code remotely on affected systems.

What is the Log4j vulnerability? The Log4j vulnerability, also known as Log4Shell, is a critical vulnerability discovered in the Apache Log4j logging library in November 2021. Log4Shell …

Oct 20, 2025 · The Log4Shell incident showed us how quickly our digital world can be threatened by a single vulnerability. But it also demonstrated the power of the open source community to …

Oct 23, 2024 · In December 2021, a critical security vulnerability named Log4Shell was discovered in the Log4j library, a logging tool widely used in Java applications around the …

Resources from Palo Alto Networks to help security teams respond to the Log4j, also known as Log4Shell, vulnerability.

Mar 19, 2025 · Log4Shell is a critical Remote Code Execution (RCE) vulnerability in the Apache Log4j logging framework. It went unnoticed for nearly eight years, since 2013, before its public …

This repo contains operational information regarding the Log4shell vulnerability in the Log4j logging library. Especially CVE-2021-44228 / CVE-2021-45046 and also covers CVE-2021 …

Nov 26, 2025 · The original Apache Log4j vulnerability (CVE-2021-44228), also known as Log4Shell, is a cybersecurity vulnerability on the Apache Log4j 2 Java library. This security …

Nov 25, 2025 · The Log4Shell vulnerability is a remote code execution (RCE) vulnerability found in the Apache Log4j 2 logging library. As Apache Log4j 2 is commonly used by many software …