CVE-2006-5614

LOWCVSS v2 · 2.62.6—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 2.6 — v2 rates that LOW (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:H/Au:N/C:N/I:N/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 79.1% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
2.6EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 79%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 79%CVSS v2: 2.6Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Microsoft Windows NAT Helper Components (ipnathlp.dll) on Windows XP SP2, when Internet Connection Sharing is enabled, allows remote attackers to cause a denial of service (svchost.exe crash) via a malformed DNS query, which results in a null pointer dereference.

CVSS v2.0 (legacy)
2.6LOWNVD never assigned a CVSS v3 rating to this CVE
EG Score
2.6(low)
EG Risk
48(Track)
EG Risk 48/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity26% × 45%
Exploitation79% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
79%
EPSS %ILE
100%
KEV
Not listed

Published

October 31, 2006

Last Modified

April 23, 2026

References (16)

Data Freshness Timeline

(refreshed 2× in last 7d / 3× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-10 09:24 UTCEPSS rescore
  2. 2026-09-05 15:22 UTCEPSS rescore
  3. 2026-08-30 01:14 UTCEPSS rescore
  4. 2026-08-06 13:41 UTCEPSS rescore
  5. 2026-07-28 15:30 UTCEPSS rescore
  6. 2026-07-26 13:30 UTCEG score recompute▲ 2.60
  7. 2026-07-25 14:11 UTCEPSS rescore
  8. 2026-07-24 14:11 UTCEPSS rescore
  9. 2026-07-23 00:51 UTCEG score recompute
  10. 2026-07-23 00:31 UTCEG score recompute▼ 8.00
  11. 2026-07-22 23:56 UTCEG score recompute▲ 8.00
  12. 2026-07-22 21:35 UTCEG score recompute▼ 9.00
  13. 2026-07-22 14:03 UTCEPSS rescore
  14. 2026-07-21 15:19 UTCEPSS rescore
  15. 2026-07-20 17:02 UTCEPSS rescore
  16. 2026-07-16 16:58 UTCEPSS rescore
  17. 2026-07-15 16:54 UTCEPSS rescore
  18. 2026-07-15 16:54 UTCEPSS rescore
  19. 2026-07-06 02:19 UTCEPSS rescore
  20. 2026-07-06 02:19 UTCEPSS rescore
  21. 2026-07-01 15:02 UTCEPSS rescore
  22. 2026-07-01 15:02 UTCEPSS rescore
  23. 2026-06-30 23:18 UTCEPSS rescore
  24. 2026-06-28 14:02 UTCEPSS rescore
  25. 2026-06-28 04:52 UTCEPSS rescore
Show 32 more
  1. 2026-06-25 13:46 UTCEPSS rescore
  2. 2026-06-25 13:46 UTCEPSS rescore
  3. 2026-06-24 14:02 UTCEPSS rescore
  4. 2026-06-24 14:01 UTCEPSS rescore
  5. 2026-06-23 21:29 UTCEPSS rescore
  6. 2026-06-23 21:29 UTCEPSS rescore
  7. 2026-06-19 19:22 UTCEPSS rescore
  8. 2026-06-19 19:22 UTCEPSS rescore
  9. 2026-06-18 17:49 UTCEPSS rescore
  10. 2026-06-18 17:49 UTCEPSS rescore
  11. 2026-06-17 17:49 UTCEPSS rescore
  12. 2026-06-17 17:49 UTCEPSS rescore
  13. 2026-06-15 17:44 UTCEPSS rescore
  14. 2026-06-14 23:13 UTCEPSS rescore
  15. 2026-06-13 22:57 UTCEPSS rescore
  16. 2026-06-13 22:57 UTCEPSS rescore
  17. 2026-06-12 23:08 UTCEPSS rescore
  18. 2026-06-05 22:44 UTCEPSS rescore
  19. 2026-06-05 22:44 UTCEPSS rescore
  20. 2026-06-01 13:49 UTCEPSS rescore
  21. 2026-06-01 13:49 UTCEPSS rescore
  22. 2026-05-31 06:05 UTCEG score recompute
  23. 2026-05-31 06:05 UTCGHSA enrichment
  24. 2026-05-28 13:42 UTCEPSS rescore
  25. 2026-05-28 13:42 UTCEPSS rescore
  26. 2026-05-27 13:37 UTCEPSS rescore
  27. 2026-05-27 13:37 UTCEPSS rescore
  28. 2026-05-20 22:36 UTCEPSS rescore
  29. 2026-05-20 11:20 UTCEPSS rescore
  30. 2026-05-20 11:20 UTCEPSS rescore
  31. 2026-05-18 21:29 UTCEPSS rescore
  32. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-2682✓ verified
    First seen Oct 30, 2006

    Microsoft Windows - NAT Helper Components Remote Denial of Service

    Open source ↗
  • Exploit-DBEDB-2672✓ verified
    First seen Oct 28, 2006

    Microsoft Windows - NAT Helper Components 'ipnathlp.dll' Remote Denial of Service

    Open source ↗
  • Metasploitauxiliary/dos/windows/nat/nat_helper✓ verified
    First seen Oct 26, 2006

    Microsoft Windows NAT Helper Denial of Service

    Open source ↗

Frequently asked(4)

What is CVE-2006-5614?
CVE-2006-5614 is a low vulnerability published on October 31, 2006. Microsoft Windows NAT Helper Components (ipnathlp.dll) on Windows XP SP2, when Internet Connection Sharing is enabled, allows remote attackers to cause a denial of service (svchost.exe crash) via a malformed DNS query, which results in a null pointer dereference.
When was CVE-2006-5614 disclosed?
CVE-2006-5614 was first published in the National Vulnerability Database on October 31, 2006, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2006-5614 actively exploited?
CVE-2006-5614 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79% probability of exploitation in the next 30 days, which ranks it in the top 0.4% of all scored CVEs.
How do I remediate CVE-2006-5614?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-5614, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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