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CVE-2002-0935

Apache Tomcat DoS Via Requests Including Null Characters

5.0 MediumFix available

Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.

Exploit likelihood

7.85%Up 5.6 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 5.0

Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.

Record
CVE-2002-0935
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated
2026-11-02
CVE List No score

Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.

Record
CVE-2002-0935
Updated
2026-11-02
EUVDEUVD-2022-1871 No score

Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.

Record
EUVD-2022-1871
Updated
2026-11-03
GitHub AdvisoriesGHSA-xmf4-j3j7-xj7q No score

Apache Tomcat DoS Via Requests Including Null Characters

Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.

Record
GHSA-xmf4-j3j7-xj7q
Weakness
CWE-400
Updated
2026-11-02
OSVGHSA-xmf4-j3j7-xj7q No score

Apache Tomcat DoS Via Requests Including Null Characters

Apache Tomcat 4.0.3, and possibly other versions before 4.1.3 beta, allows remote attackers to cause a denial of service (resource exhaustion) via a large number of requests to the server with null characters, which causes the working threads to hang.

Record
GHSA-xmf4-j3j7-xj7q
Weakness
CWE-400
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.apache.tomcat:tomcat
Maven
before 4.1.3-beta
4.1.3-beta

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2002-0935 is a medium vulnerability (CVSS 5.0) in Apache Tomcat, published October 4, 2002. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.85%, the 94th percentile. Fixed in org.apache.tomcat:tomcat 4.1.3-beta.

References

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