CVE-2006-3456

HIGHCVSS v2 · 8.58.5—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 8.5 — v2 rates that HIGH (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:M/Au:S/C:C/I:C/A:C. 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 3.9% 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
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS v2: 8.5Exploit: None knownExposed: 0

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

The Symantec NAVOPTS.DLL ActiveX control (aka Symantec.Norton.AntiVirus.NAVOptions) 12.2.0.13, as used in Norton AntiVirus, Internet Security, and System Works 2005 and 2006, is designed for use only in application-embedded web browsers, which allows remote attackers to "crash the control" via unspecified vectors related to content on a web site, and place Internet Explorer into a "defunct state" in which remote attackers can execute arbitrary code in addition to other Symantec ActiveX controls, regardless of whether they are marked safe for scripting. NOTE: this CVE was inadvertently used for an E-mail Auto-Protect issue, but that issue has been assigned CVE-2007-3771.

CVSS v2.0 (legacy)
8.5HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
8.5(low)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity85% × 45%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
89%
KEV
Not listed

Published

May 11, 2007

Last Modified

April 23, 2026

References (16)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 22× 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. 2026-07-26 13:29 UTCEG score recompute▲ 8.50
  2. 2026-07-24 14:11 UTCEPSS rescore
  3. 2026-07-23 00:50 UTCEG score recompute
  4. 2026-07-23 00:30 UTCEG score recompute
  5. 2026-07-22 23:55 UTCEG score recompute
  6. 2026-07-22 21:34 UTCEG score recompute
  7. 2026-07-20 17:02 UTCEPSS rescore
  8. 2026-07-18 09:59 UTCEPSS rescore
  9. 2026-07-16 16:58 UTCEPSS rescore
  10. 2026-07-15 16:53 UTCEPSS rescore
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  1. 2026-06-24 14:01 UTCEPSS rescore
  2. 2026-06-23 21:29 UTCEPSS rescore
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  4. 2026-06-22 14:22 UTCEPSS rescore
  5. 2026-06-21 01:56 UTCEPSS rescore
  6. 2026-06-19 19:22 UTCEPSS rescore
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  8. 2026-06-18 17:49 UTCEPSS rescore
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  14. 2026-06-15 17:44 UTCEPSS rescore
  15. 2026-06-13 22:56 UTCEPSS rescore
  16. 2026-06-12 23:08 UTCEPSS rescore
  17. 2026-06-11 13:55 UTCEPSS rescore
  18. 2026-06-10 22:14 UTCEPSS rescore
  19. 2026-06-10 13:17 UTCEPSS rescore
  20. 2026-06-07 15:21 UTCEPSS rescore
  21. 2026-06-06 13:44 UTCEPSS rescore
  22. 2026-06-06 13:44 UTCEPSS rescore
  23. 2026-06-05 22:43 UTCEPSS rescore
  24. 2026-06-05 06:07 UTCEPSS rescore
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  26. 2026-06-04 13:09 UTCEPSS rescore
  27. 2026-06-04 13:09 UTCEPSS rescore
  28. 2026-06-02 20:10 UTCEPSS rescore
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  30. 2026-06-01 13:49 UTCEPSS rescore
  31. 2026-06-01 13:49 UTCEPSS rescore
  32. 2026-06-01 13:49 UTCEPSS rescore
  33. 2026-05-31 22:28 UTCEPSS rescore
  34. 2026-05-31 02:46 UTCEG score recompute
  35. 2026-05-31 02:46 UTCGHSA enrichment
  36. 2026-05-31 00:13 UTCEPSS rescore
  37. 2026-05-31 00:13 UTCEPSS rescore
  38. 2026-05-31 00:13 UTCEPSS rescore
  39. 2026-05-29 13:40 UTCEPSS rescore
  40. 2026-05-28 13:42 UTCEPSS rescore
  41. 2026-05-28 13:42 UTCEPSS rescore
  42. 2026-05-27 13:37 UTCEPSS rescore
  43. 2026-05-27 13:37 UTCEPSS rescore
  44. 2026-05-26 13:41 UTCEPSS rescore
  45. 2026-05-26 13:41 UTCEPSS rescore
  46. 2026-05-26 07:16 UTCEPSS rescore
  47. 2026-05-26 07:16 UTCEPSS rescore
  48. 2026-05-24 16:42 UTCEPSS rescore
  49. 2026-05-22 21:15 UTCEPSS rescore
  50. 2026-05-22 21:15 UTCEPSS rescore
  51. 2026-05-21 22:38 UTCEPSS rescore
  52. 2026-05-20 22:36 UTCEPSS rescore
  53. 2026-05-20 22:36 UTCEPSS rescore
  54. 2026-05-20 11:20 UTCEPSS rescore
  55. 2026-05-20 11:20 UTCEPSS rescore
  56. 2026-05-18 21:29 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2006-3456?
CVE-2006-3456 is a high vulnerability published on May 11, 2007. The Symantec NAVOPTS.DLL ActiveX control (aka Symantec.Norton.AntiVirus.NAVOptions) 12.2.0.13, as used in Norton AntiVirus, Internet Security, and System Works 2005 and 2006, is designed for use only in application-embedded web browsers, which allows remote attackers to "crash the control" via…
When was CVE-2006-3456 disclosed?
CVE-2006-3456 was first published in the National Vulnerability Database on May 11, 2007, 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-2006-3456 actively exploited?
CVE-2006-3456 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 10.9% of all scored CVEs.
How do I remediate CVE-2006-3456?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-3456, 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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