VendorsApachelog4netall versions
Vulnerabilities

Apache Software Foundation

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

3CVEs
CVE-2018-1285
Apache log4net versions before 2.0.10 do not disable XML external entities when parsing log4net configuration files. This allows for XXE-based attacks in applications that accept attacker-controlled log4net configuration files.
Published 2020-05-11 · Modified
9.8EPSS 0.174
CVE-2026-40021
Apache Log4net: Silent log event loss in XmlLayout and XmlLayoutSchemaLog4J due to unescaped XML 1.0 forbidden characters
Published 2026-04-10 · Analyzed
6.3EPSS 0.010
CVE-2006-0743
Format string vulnerability in LocalSyslogAppender in Apache log4net 1.2.9 might allow remote attackers to cause a denial of service (memory corruption and termination) via unknown vectors.
Published 2006-03-09 · Modified
5.0EPSS 0.064