MEDIUM
The Catalina org.apache.catalina.connector.http package in Tomcat 4.0.x up to 4.0.3 allows remote attackers to cause a denial of service via several requests that do not follow the HTTP protocol, which causes Tomcat to reject later requests
Published Oct 17, 2003
5.0
MEDIUMCVSS 2.0
EPSS 34.82%
Description
The Catalina org.apache.catalina.connector.http package in Tomcat 4.0.x up to 4.0.3 allows remote attackers to cause a denial of service via several requests that do not follow the HTTP protocol, which causes Tomcat to reject later requests.
Affected products
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
34.82% 0.34816
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.34816
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 34.82% (0.34816) | 98.39th | v5 (v2026.06.15) |
| Aug 26, 2026 | 34.82% (0.34816) | 98.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 32.66% (0.32657) | 98.11th | v5 (v2026.06.15) |
| Mar 30, 2025 | 20.41% (0.20413) | 95.06th | v4 (v2025.03.14) |
| Mar 29, 2025 | 23.96% (0.23961) | 93.62th | v4 (v2025.03.14) |
| Mar 17, 2025 | 20.41% (0.20413) | 95.07th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.59% (0.00589) | 78.99th | v3 (v2023.03.01) |
| Mar 27, 2024 | 0.46% (0.00465) | 74.95th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.63% (0.00633) | 78.42th | v3 (v2023.03.01) |
| Apr 24, 2023 | 0.63% (0.00633) | 75.97th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.53% (0.00525) | 73.34th | v3 (v2023.03.01) |
| Mar 6, 2023 | 33.04% (0.33043) | 97.64th | v2 (v2022.01.01) |
| Feb 4, 2022 | 33.04% (0.33043) | 96.56th | v2 (v2022.01.01) |
Weaknesses (1)
References (17)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=215506 x_refsource_CONFIRMExploitPatchVendor Advisory
- http://secunia.com/advisories/30899 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/30908 third-party-advisoryx_refsource_SECUNIA
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-239312-1 vendor-advisoryx_refsource_SUNALERT
- http://tomcat.apache.org/security-4.html x_refsource_CONFIRM
- http://www.debian.org/security/2003/dsa-395 vendor-advisoryx_refsource_DEBIANPatchVendor Advisory
- http://www.securityfocus.com/bid/8824 vdb-entryx_refsource_BIDPatchVendor Advisory
- http://www.vupen.com/english/advisories/2008/1979/references vdb-entryx_refsource_VUPEN
- https://exchange.xforce.ibmcloud.com/vulnerabilities/13429 vdb-entryx_refsource_XF
- https://github.com/advisories/GHSA-7wj2-48c4-2684 Advisory
- https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3@%3Cdev.tomcat.apache.org%3E
- https://nvd.nist.gov/vuln/detail/CVE-2003-0866
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 17, 2003
Updated Aug 8, 2024
Reserved Oct 15, 2003
Link CVE-2003-0866
CISA Vulnrichment
GHSA-7WJ2-48C4-2684 Updated n/a