Format string vulnerability in LocalSyslogAppender in Apache log4net 1.2.9 might allow remote attackers to cause a denial of service…

Description

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.

Scores

EPSS (exploitation in 30 days)

6.4% · top 6.3% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.

Weakness

• n/a
• CWE-134 (opens in a new tab)All about CWE-134 and its CVEs

Affected products

• n/a

  • affected n/a

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• NuGetlog4netGHSA-f9fr-w54q-772h (opens in a new tab)

References (8)

• 22932 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2006-0955 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 19241 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SUSE-SR:2006:026 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• http://issues.apache.org/jira/browse/LOG4NET-67 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 23905 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• log4net-localsyslogappender-dos(25196) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• 17095 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-f9fr-w54q-772h (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2006-0743](https://trackcve.app/badge/CVE-2006-0743.svg)](https://trackcve.app/cve/CVE-2006-0743)

Record last updated 7 Aug 2024, 16:48 UTC.