CVE-2025-11226

MEDIUM

logback-core <= 1.5.18 - Remote Code Execution via Conditional Configuration Processing

Title source: llm
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v4 5.9
EPSS 0.0015
EPSS Percentile 4.6%
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/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:N/R:X/V:X/RE:M/U:Green

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-20
Status published
Products (4)
ch.qos.logback/logback-core 1.4.0 - 1.5.19Maven
QOS.CH Sarl/Logback-core 0.9.20 - 1.5.18
QOS.CH Sarl/Logback-core 1.3.16
QOS.CH Sarl/Logback-core 1.5.19
Published Oct 01, 2025
Tracked Since Feb 18, 2026