CVE-2025-54813

MEDIUM EPSS 64.6%
Published Aug 22, 202510mo ago · Modified Jun 17, 20262w ago
6.3 CVSS 4.0
Medium
Find Similar
Published Aug 22, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.3
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
64.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-117

Affected Products 1

VendorProductVersionRange
apachelog4cxx* <1.5.0

References 4

  • openwall.com http://www.openwall.com/lists/oss-security/2025/08/22/3
  • github.com https://github.com/apache/logging-log4cxx/pull/512
    Issue TrackingPatch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00002.html
  • logging.apache.org https://logging.apache.org/security.html#CVE-2025-54813
    Vendor Advisory

Remediation

  • github.com https://github.com/apache/logging-log4cxx/pull/512
    Issue TrackingPatch