# CVE-2001-1431

## Summary

- **CVE ID:** CVE-2001-1431
- **Severity:** UNKNOWN
- **CVSS Score:** 0.04
- **CWE:** N/A
- **Published:** Mar 24, 2005
- **Last Modified:** Mar 16, 2026

## Description

Nokia Firewall Appliances running IPSO 3.3 and VPN-1/FireWall-1 4.1 Service Pack 3, IPSO 3.4 and VPN-1/FireWall-1 4.1 Service Pack 4, and IPSO 3.4 or IPSO 3.4.1 and VPN-1/FireWall-1 4.1 Service Pack 5, when SYN Defender is configured in Active Gateway mode, does not properly rewrite the third packet of a TCP three-way handshake to use the NAT IP address, which allows remote attackers to gain sensitive information.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](https://exchange.xforce.ibmcloud.com/vulnerabilities/8293)
- [CNA](http://www.kb.cert.org/vuls/id/258731)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.75%
- **EPSS Percentile:** 72.8

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