CVE-2001-1431

Name: CVE-2001-1431
Creator: NVD / NIST
Published: 2001-10-08T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.30%

Last modified Jun 16, 2026

CVE-2001-1431 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.30% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.30%

66.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions	Update
Checkpoint	Firewall-1	4.1	Sp3
Checkpoint	Vpn-1	4.1	Sp3
Nokia	Firewall Appliance	ipso_3.3	—
Nokia	Firewall Appliance	ipso_3.4	—
Nokia	Firewall Appliance	ipso_3.41	—

References

http://www.kb.cert.org/vuls/id/258731US Government Resource
https://exchange.xforce.ibmcloud.com/vulnerabilities/8293
http://www.kb.cert.org/vuls/id/258731US Government Resource
https://exchange.xforce.ibmcloud.com/vulnerabilities/8293

Timeline

Published: Oct 8, 2001
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2001-1431?

How severe is CVE-2001-1431?

Severity scoring for CVE-2001-1431 is pending analysis. The EPSS model estimates a 1.30% probability of exploitation in the next 30 days.

How do I fix CVE-2001-1431?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2001-1431?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST