How severe is CVE-2002-0935?

No CVSS score has been assigned to CVE-2002-0935 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2002-0935?

CVE-2002-0935 affects the following packages: org.apache.tomcat:tomcat (Maven). Ecosystems affected: Maven.

How do I fix CVE-2002-0935?

Update org.apache.tomcat:tomcat to 4.1.3-beta or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2002-0935 is resolved across your whole dependency graph.

How do I detect CVE-2002-0935 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.tomcat:tomcat, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2002-0935 if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is CVE-2002-0935 actively exploited in the wild?

No public exploit code has been indexed for CVE-2002-0935 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2002-0935?

CVE-2002-0935 has an EPSS (Exploit Prediction Scoring System) score of 7.9%, placing it in the 95th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was CVE-2002-0935 published, and has it been updated?

CVE-2002-0935 was published on April 30, 2022 and was last updated on February 12, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕ Maven

Not in CISA KEV

CVE-2002-0935 — tomcat

CVE-2002-0935 is a security vulnerability in org.apache.tomcat:tomcat. A fix is available for org.apache.tomcat:tomcat — see the affected versions and patch details below.

Apache Tomcat DoS Via Requests Including Null Characters

Published

Apr 30, 2022

Updated

Feb 12, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

7.9%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs95th percentile — riskier than 95% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

☕org.apache.tomcat:tomcat

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.tomcat:tomcat`	all versions	4.1.3-beta`org.apache.tomcat:tomcat:4.1.3-beta`

Affected Products

1 product · 1 configurations

Application

tomcatapache

1 version

4.0.3

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.tomcat:tomcat, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.tomcat:tomcat to 4.1.3-beta or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2002-0935 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2002-0935 in your dependencies?

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