CVE-2007-0774

CVE-2007-0774 is a high-severity vulnerability in Apache Tomcat Jk Web Server Connector with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 82% places it in the 100th percentile, indicating an elevated likelihood of exploitation.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 82% (100th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Apache Tomcat Jk Web Server Connector
• Published: 2007-03-04
• Last modified: 2026-06-16

Description

Stack-based buffer overflow in the map_uri_to_worker function (native/common/jk_uri_worker_map.c) in mod_jk.so for Apache Tomcat JK Web Server Connector 1.2.19 and 1.2.20, as used in Tomcat 4.1.34 and 5.5.20, allows remote attackers to execute arbitrary code via a long URL that triggers the overflow in a URI worker map routine.

Frequently asked questions

What is CVE-2007-0774?

Stack-based buffer overflow in the map_uri_to_worker function (native/common/jk_uri_worker_map.c) in mod_jk.so for Apache Tomcat JK Web Server Connector 1.2.19 and 1.2.20, as used in Tomcat 4.1.34 and 5.5.20, allows remote attackers to execute arbitrary code via a long URL that triggers the overflow in a URI worker map routine.

How severe is CVE-2007-0774?

CVE-2007-0774 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2007-0774 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 82% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-0774?

CVE-2007-0774 primarily affects Apache Tomcat Jk Web Server Connector. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-0774?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2007-0774 published?

CVE-2007-0774 was published on 2007-03-04 and last updated on 2026-06-16.

References

• http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01178795
• http://secunia.com/advisories/24398
• http://secunia.com/advisories/24558
• http://secunia.com/advisories/27037
• http://secunia.com/advisories/28711
• http://securitytracker.com/id?1017719
• http://tomcat.apache.org/connectors-doc/miscellaneous/changelog.html
• http://tomcat.apache.org/security-jk.html
• http://www.cisco.com/en/US/products/products_security_advisory09186a008093f040.shtml
• http://www.gentoo.org/security/en/glsa/glsa-200703-16.xml
• http://www.redhat.com/support/errata/RHSA-2007-0096.html
• http://www.securityfocus.com/archive/1/461734/100/0/threaded
• http://www.securityfocus.com/bid/22791
• http://www.vupen.com/english/advisories/2007/0809
• http://www.vupen.com/english/advisories/2007/3386
• http://www.vupen.com/english/advisories/2008/0331
• http://www.zerodayinitiative.com/advisories/ZDI-07-008.html
• https://exchange.xforce.ibmcloud.com/vulnerabilities/32794
• https://lists.apache.org/thread.html/277d42b48b6e9aef50949c0dcc79ce21693091d73da246b3c1981925%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/5b7a23e245c93235c503900da854a143596d901bf1a1f67e851a5de4%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/8d2a579bbd977c225c70cb23b0ec54865fb0dab5da3eff1e060c9935%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/r5c616dfc49156e4b06ffab842800c80f4425924d0f20c452c127a53c%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5513

Affected products (2)

• cpe:2.3:a:apache:tomcat_jk_web_server_connector:1.2.19:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat_jk_web_server_connector:1.2.20:*:*:*:*:*:*:*

More vulnerabilities in Apache Tomcat Jk Web Server Connector

• CVE-2007-1860 — Medium (CVSS 5.0): mod_jk in Apache Tomcat JK Web Server Connector 1.2.x before 1.2.23 decodes request URLs within the Apache HTTP Server…

All CVEs affecting Apache Tomcat Jk Web Server Connector →