# CVE-2003-1491

## Summary

- **CVE ID:** CVE-2003-1491
- **Severity:** UNKNOWN
- **CVSS Score:** 0.01
- **CWE:** N/A
- **Published:** Oct 24, 2007
- **Last Modified:** Mar 16, 2026

## Description

Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP port 53), which allows remote attackers to bypass the firewall filters via packets with a source port of 53.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://www.securityfocus.com/bid/7436)
- [CNA](http://archives.neohapsis.com/archives/fulldisclosure/2003-q2/0352.html)
- [CNA](https://exchange.xforce.ibmcloud.com/vulnerabilities/11880)
- [CNA](http://www.securiteam.com/securitynews/5FP0N1P9PI.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.27%
- **EPSS Percentile:** 50.3

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