# CVE-2003-0993

## Summary

- **CVE ID:** CVE-2003-0993
- **Severity:** UNKNOWN
- **CVSS Score:** 0.2
- **CWE:** N/A
- **Published:** Sep 1, 2004
- **Last Modified:** Mar 16, 2026

## Description

mod_access in Apache 1.3 before 1.3.30, when running big-endian 64-bit platforms, does not properly parse Allow/Deny rules using IP addresses without a netmask, which could allow remote attackers to bypass intended access restrictions.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://www.apacheweek.com/features/security-13)
- [CNA](http://sunsolve.sun.com/search/document.do?assetkey=1-26-57628-1)
- [CNA](http://sunsolve.sun.com/search/document.do?assetkey=1-26-101555-1)
- [CNA](http://www.trustix.org/errata/2004/0027)
- [CNA](http://sunsolve.sun.com/search/document.do?assetkey=1-26-101841-1)
- [CNA](http://marc.info/?l=bugtraq&m=108437852004207&w=2)
- [CNA](http://www.slackware.com/security/viewer.php?l=slackware-security&y=2004&m=slackware-security.529643)
- [CNA](http://security.gentoo.org/glsa/glsa-200405-22.xml)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A100111)
- [CNA](http://marc.info/?l=apache-cvs&m=107869603013722)
- [CNA](http://frontal2.mandriva.com/security/advisories?name=MDKSA-2004:046)
- [CNA](https://exchange.xforce.ibmcloud.com/vulnerabilities/15422)
- [CNA](http://issues.apache.org/bugzilla/show_bug.cgi?id=23850)
- [CNA](http://www.securityfocus.com/bid/9829)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4670)
- [CNA](https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E)
- [CNA](https://lists.apache.org/thread.html/re028d61fe612b0908595d658b9b39e74bca56f2a1ed3c5f06b5ab571%40%3Ccvs.httpd.apache.org%3E)
- [CNA](https://lists.apache.org/thread.html/r5419c9ba0951ef73a655362403d12bb8d10fab38274deb3f005816f5%40%3Ccvs.httpd.apache.org%3E)
- [CNA](https://lists.apache.org/thread.html/r7035b7c9091c4b665a3b7205364775410646f12125d48e74e395f2ce%40%3Ccvs.httpd.apache.org%3E)
- [CNA](https://lists.apache.org/thread.html/raa117ef183f0da9b3f46efbeaa66f7622bd68868a450cae4fd8ed594%40%3Ccvs.httpd.apache.org%3E)
- [CNA](https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E)
- [CNA](https://lists.apache.org/thread.html/r5f9c22f9c28adbd9f00556059edc7b03a5d5bb71d4bb80257c0d34e4%40%3Ccvs.httpd.apache.org%3E)
- [CNA](https://lists.apache.org/thread.html/rf2f0f3611f937cf6cfb3b4fe4a67f69885855126110e1e3f2fb2728e%40%3Ccvs.httpd.apache.org%3E)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 5.03%
- **EPSS Percentile:** 89.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._