CVE-2007-6286 Apache Tomcat Does Not Properly Handle Empty Requests

What is CVE-2007-6286?

CVE-2007-6286 is a medium-severity vulnerability in Apache Tomcat, published on 12 Feb 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Apache Tomcat 5.5.11 through 5.5.25 and 6.0.0 through 6.0.15, when the native APR connector is used, does not properly handle an empty request to the SSL port, which allows remote attackers to trigger handling of "a duplicate copy of one of the recent requests," as demonstrated by using netcat to send the empty request.

Which versions are affected by CVE-2007-6286?

4 open source packages ship an affected version, including org.apache.tomcat:tomcat. It affects 1 product.

Products include Apache Tomcat.

How do I fix CVE-2007-6286?

No fix has been published for CVE-2007-6286 yet. Limit exposure of the affected software until one is available.

Is CVE-2007-6286 being exploited?

There is no known exploitation of CVE-2007-6286 in the wild and no public exploit code.

Other vulnerabilities in Apache Tomcat

• CVE-2025-24813 Apache Tomcat Path Equivalence Exploited Critical 10.0
• CVE-2016-8735 Apache Tomcat Remote Code Execution Exploited Critical 9.8
• CVE-2017-12617 Apache Tomcat Remote Code Execution Exploited High 8.1
• CVE-2017-12615 Apache Tomcat on Windows Remote Code Execution Exploited High 8.1
• CVE-2026-34486 Apache Tomcat Missing Encryption of Sensitive Data Exploited High 7.5

All Apache Tomcat vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-qrj4-rmqg-4hcp.