# CVE-2001-1013

## Summary

- **CVE ID:** CVE-2001-1013
- **Severity:** UNKNOWN
- **CVSS Score:** 3.41
- **CWE:** N/A
- **Published:** Feb 2, 2002
- **Last Modified:** Mar 16, 2026

## Description

Apache on Red Hat Linux with with the UserDir directive enabled generates different error codes when a username exists and there is no public_html directory and when the username does not exist, which could allow remote attackers to determine valid usernames on the server.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://www.securityfocus.com/bid/3335)
- [CNA](http://www.securityfocus.com/archive/1/213667)
- [CNA](http://archives.neohapsis.com/archives/vuln-dev/2000-q3/0094.html)
- [CNA](http://archives.neohapsis.com/archives/vuln-dev/2000-q3/0083.html)
- [CNA](https://exchange.xforce.ibmcloud.com/vulnerabilities/7129)
- [CNA](http://archives.neohapsis.com/archives/vuln-dev/2000-q3/0087.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 68.12%
- **EPSS Percentile:** 98.6

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