ACE vulnerability in conditional configuration file processing by QOS.CH logback-core up to and including version 1.5.18 in Java applications, allows an attacker to execute arbitrary code by compromising an existing logback configuration file or by injecting an environment variable before program execution. A successful attack requires the presence of Janino library and Spring Framework to be present on the user's class path. In addition, the attacker must  have write access to a configuration file. Alternatively, the attacker could inject a malicious environment variable pointing to a malicious configuration file. In both cases, the attack requires existing privilege.
History

Fri, 03 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:L'}

threat_severity

Moderate


Thu, 02 Oct 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Qos
Qos logback
Vendors & Products Qos
Qos logback

Wed, 01 Oct 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 01 Oct 2025 07:45:00 +0000

Type Values Removed Values Added
Description ACE vulnerability in conditional configuration file processing by QOS.CH logback-core up to and including version 1.5.18 in Java applications, allows an attacker to execute arbitrary code by compromising an existing logback configuration file or by injecting an environment variable before program execution. A successful attack requires the presence of Janino library and Spring Framework to be present on the user's class path. In addition, the attacker must  have write access to a configuration file. Alternatively, the attacker could inject a malicious environment variable pointing to a malicious configuration file. In both cases, the attack requires existing privilege.
Title Conditional processing of logback.xml configuration file, in conjuction with Spring Framework and Janino
Weaknesses CWE-20
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:P/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L/AU:N/RE:M/U:Green'}


cve-icon MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published:

Updated: 2025-10-01T13:14:59.170Z

Reserved: 2025-10-01T07:25:16.311Z

Link: CVE-2025-11226

cve-icon Vulnrichment

Updated: 2025-10-01T13:14:55.918Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-01T08:15:31.250

Modified: 2025-10-02T19:12:17.160

Link: CVE-2025-11226

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-01T07:26:12Z

Links: CVE-2025-11226 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-02T08:46:01Z