Vulnerability record · CVE-2004-1435 · published 31 December 2004

CVE-2004-1435: Cisco optical networking systems software vulnerability

Cisco · Optical Networking Systems Software

Multiple versions of Cisco ONS 15327, ONS 15454, and ONS 15454 SDH, including 4.6(0) and 4.6(1), 4.5(x), 4.1(0) to 4.1(3), 4.0(0) to 4.0(2), and earlier versions, allows remote attackers to cause a denial of service (control card reset) via a large number of TCP connections with an invalid response instead of the final ACK (TCP-ACK).

5.0 CVSS 2.0 Medium EPSS 3.2% · top 12.5%

5.0CVSS 2.0 base score

3.2%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

10References

16 Jun 2026Last modified by NVD

Description

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Optical Networking Systems Software Cisco

References

Link	Tags
http://secunia.com/advisories/12117
http://www.cisco.com/warp/public/707/cisco-sa-20040721-ons.shtml	Vendor Advisory
http://www.kb.cert.org/vuls/id/277048	Third Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/10768
https://exchange.xforce.ibmcloud.com/vulnerabilities/16763
http://secunia.com/advisories/12117
http://www.cisco.com/warp/public/707/cisco-sa-20040721-ons.shtml	Vendor Advisory
http://www.kb.cert.org/vuls/id/277048	Third Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/10768
https://exchange.xforce.ibmcloud.com/vulnerabilities/16763

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2004-0308Cisco optical networking systems software vulnerabilityUnknown vulnerability in Cisco ONS 15327 before 4.1(3), ONS 15454 before 4.6(1), ONS 15454 SD before 4.1(3), and Cisco ONS15600 before 1.3(0) allows …EPSS 1.7%24 Nov 2004 10.0CVE-2002-1558Cisco optical networking systems software vulnerabilityCisco ONS15454 and ONS15327 running ONS before 3.4 have an account for the VxWorks Operating System in the TCC, TCC+ and XTC that cannot be changed o…EPSS 2.8%31 Mar 2003 7.8CVE-2006-1670Cisco optical networking systems software vulnerabilityControl cards for Cisco Optical Networking System (ONS) 15000 series nodes before 20060405 allow remote attackers to cause a denial of service (memor…EPSS 2.3%7 Apr 2006 7.8CVE-2003-0567Cisco ios improper input validation vulnerabilityCisco IOS 11.x and 12.0 through 12.2 allows remote attackers to cause a denial of service (traffic block) by sending a particular sequence of IPv4 pa…EPSS 17%18 Aug 2003 7.5CVE-2006-1672Cisco transport controller vulnerabilityThe installation of Cisco Transport Controller (CTC) for Cisco Optical Networking System (ONS) 15000 series nodes adds a Java policy file entry with …EPSS 4.1%7 Apr 2006 7.5CVE-2004-1436Cisco optical networking systems software vulnerabilityThe Transaction Language 1 (TL1) login interface in Cisco ONS 15327 4.6(0) and 4.6(1) and 15454 and 15454 SDH 4.6(0) and 4.6(1), when a user account …EPSS 3.1%31 Dec 2004 7.5CVE-2002-1553Cisco optical networking systems software vulnerabilityCisco ONS15454 and ONS15327 running ONS before 3.4 allows remote attackers to modify the system configuration and delete files by establishing an FTP…EPSS 1.6%31 Mar 2003 5.0CVE-2006-1671Cisco transport controller vulnerabilityControl cards for Cisco Optical Networking System (ONS) 15000 series nodes before 20060405 allow remote attackers to cause a denial of service (card …EPSS 2.4%7 Apr 2006

Source: NIST National Vulnerability Database (record CVE-2004-1435), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.