# CVE-2001-1581

## Summary

- **CVE ID:** CVE-2001-1581
- **Severity:** UNKNOWN
- **CVSS Score:** 0.01
- **CWE:** N/A
- **Published:** May 31, 2007
- **Last Modified:** Mar 16, 2026

## Description

The File Blocker feature in Clearswift MAILsweeper for SMTP 4.2 allows remote attackers to bypass e-mail attachment filtering policies via a modified name in a Content-Type header.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](https://exchange.xforce.ibmcloud.com/vulnerabilities/6801)
- [CNA](http://www.mimesweeper.com/support/technotes/notes/1102.asp)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.30%
- **EPSS Percentile:** 52.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._