CVE-2021-45046
Apache Log4j2 Deserialization of Untrusted Data Vulnerability
MITRE ATT&CK techniques
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Summary
Apache Log4j2 contains a deserialization of untrusted data vulnerability due to the incomplete fix of CVE-2021-44228, where the Thread Context Lookup Pattern is vulnerable to remote code execution in certain non-default configurations.
Affected software
Vendor: Apache · Product: Log4j2
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Apache
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2021-44228 | Apache Log4j2 Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2021-40438 | Apache HTTP Server-Side Request Forgery (SSRF) | 100.0% | Yes |
| CVE-2017-5638 | Apache Struts Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2013-2251 | Apache Struts Improper Input Validation Vulnerability | 100.0% | Yes |
| CVE-2018-11776 | Apache Struts Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2023-46604 | Apache ActiveMQ Deserialization of Untrusted Data Vulnerability | 100.0% | Yes |
| CVE-2021-41773 | Apache HTTP Server Path Traversal Vulnerability | 100.0% | Yes |
| CVE-2024-45195 | Apache OFBiz Forced Browsing Vulnerability | 100.0% | Yes |
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