CVE-2025-54813— Apache Log4cxx: Improper escaping with JSONLayout
Quick assessment
Affected
Apache Software Foundation Apache Log4cxx
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Apache Log4cxx是美国阿帕奇（Apache）基金会的一个以 Apache log4j 为模式的 C++ 日志框架。 Apache Log4cxx 1.5.0之前版本存在安全漏洞，该漏洞源于JSONLayout未正确转义所有有效载荷字节，可能导致日志解析错误。
Possible ATT&CK Techniques 1 AI
T1565.001 · Stored Data Manipulation
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I. Basic Information for CVE-2025-54813
Vulnerability Information
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Vulnerability Title
Apache Log4cxx: Improper escaping with JSONLayout
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Output Neutralization for Logs vulnerability in Apache Log4cxx.
When using JSONLayout, not all payload bytes are properly escaped. If an attacker-supplied message contains certain non-printable characters, these will be passed along in the message and written out as part of the JSON message. This may prevent applications that consume these logs from correctly interpreting the information within them.
This issue affects Apache Log4cxx: before 1.5.0.
Users are recommended to upgrade to version 1.5.0, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
日志输出的转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Log4cxx 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Log4cxx是美国阿帕奇（Apache）基金会的一个以 Apache log4j 为模式的 C++ 日志框架。 Apache Log4cxx 1.5.0之前版本存在安全漏洞，该漏洞源于JSONLayout未正确转义所有有效载荷字节，可能导致日志解析错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Log4cxx | 0.11.0 ~ 1.5.0 | - |
|
II. Public POCs for CVE-2025-54813
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Apache Software Foundation · 2025-08-22 · 3 CVEs total
| CVE-2025-54812 | Apache Log4cxx: Improper HTML escaping in HTMLLayout | |
| CVE-2024-48988 | Apache StreamPark: SQL injection vulnerability |
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