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CVE-2007-0774

82
FAUCET Score

CVE-2007-0774 describes a stack-based buffer overflow in the mod_jk.so component of Apache Tomcat JK Web Server Connector versions 1.2.19 and 1.2.20, affecting Tomcat 4.1.34 and 5.5.20. This vulnerability allows remote attackers to execute arbitrary code by sending a crafted, long URL that triggers the overflow during URI worker map processing. With a CVSS score of 7.5, it is considered highly severe due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. While not on the KEV catalog, exploit modules are publicly available in Metasploit and ExploitDB, indicating a high likelihood of exploitation, despite minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.19CPE matchmatch criteria
cpe:2.3:a:apache:tomcat_jk_web_server_connector:1.2.19:*:*:*:*:*:*:*
1.2.20CPE matchmatch criteria
cpe:2.3:a:apache:tomcat_jk_web_server_connector:1.2.20:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
81.51%
Probability of exploitation in next 30 days
EPSS Percentile
99.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: Apache mod_jk 1.2.20 Buffer Overflow · Mar 2, 2007
ExploitDB: EDB-16798 · Jul 25, 2010
This CVE's current EPSS score of 0.8151 is in the 100th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Web Application Stack for RHEL 4Fixed in: mod_jk-0:1.2.20-1.el4s1.2
View patch
redhatpatch availablevia redhat_api
Product: RHAPS Version 2 for RHEL 4Fixed in: mod_jk-0:1.2.20-1jpp_1rh
View patch

Vendor Advisories (1)

redhatCVE-2007-0774Critical

security flaw

Feb 27, 2007

References

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