Improper Output Neutralization for Logs Affecting log4cxx package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.21% (44th percentile)

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  • Snyk IDSNYK-RHEL7-LOG4CXX-12487666
  • published4 Sept 2025
  • disclosed22 Aug 2025

Introduced: 22 Aug 2025

CVE-2025-54813  (opens in a new tab)
CWE-117  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 log4cxx.

NVD Description

Note: Versions mentioned in the description apply only to the upstream log4cxx package and not the log4cxx package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1