CVE-2001-1431 - CVE House
Back to Database
Status published Medium CVE-2001-1431

Nokia Firewall Appliances running IPSO 3.3 and VPN-1/FireWall-1 4.1 Service...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2001-1431

Credits & Attribution

No credits recorded in the NVD database.

References

More from checkpoint

View All →
CVE-2025-9142
Local privilege escalation in Harmony SASE Windows Agent
High 7.5
CVE-2025-8305
Information Disclosure in Identity Agent Debug Files
Medium 6.5
CVE-2025-8304
Information Disclosure in Identity Agent Registry Keys
Medium 6.5
CVE-2025-3831
Exposed SFTP server
High 8.1
CVE-2025-2028
Lack of TLS validation
Medium 6.5

Affected Vendor

Affected Software

firewall-1, vpn-1, firewall appliance
Vulnerable Versions:
4.1, ipso_3.3, ipso_3.4, ipso_3.41

Timeline

Official Publish: March 24th, 2005
Last Modified: August 8th, 2024
Added to House: July 18th, 2026

CVSS Vectors

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.