CVE-2004-0363

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 67%
CISA-KEV: Not listedEPSS: 67%CVSS: —Exploit: NoneExposed: 0

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

Stack-based buffer overflow in the SymSpamHelper ActiveX component (symspam.dll) in Norton AntiSpam 2004, as used in Norton Internet Security 2004, allows remote attackers to execute arbitrary code via a long parameter to the LaunchCustomRuleWizard method.

CVSS v3
—
EG Score
0.0(none)
EPSS
99.2%
KEV
Not listed

Published

April 15, 2004

Last Modified

June 16, 2026

References (16)

Data Freshness Timeline

(refreshed 4× in last 7d / 20× 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. 2026-07-13 06:07 UTCEPSS rescore
  2. 2026-07-11 08:22 UTCEPSS rescore
  3. 2026-07-11 08:22 UTCEPSS rescore
  4. 2026-07-08 15:09 UTCEPSS rescore
  5. 2026-07-02 14:00 UTCEPSS rescore
  6. 2026-06-28 14:02 UTCEPSS rescore
  7. 2026-06-28 04:52 UTCEPSS rescore
  8. 2026-06-27 03:04 UTCEPSS rescore
  9. 2026-06-23 21:29 UTCEPSS rescore
  10. 2026-06-19 19:22 UTCEPSS rescore
  11. 2026-06-19 19:22 UTCEPSS rescore
  12. 2026-06-18 17:49 UTCEPSS rescore
  13. 2026-06-18 17:49 UTCEPSS rescore
  14. 2026-06-17 17:49 UTCEPSS rescore
  15. 2026-06-17 17:49 UTCEPSS rescore
  16. 2026-06-16 17:49 UTCEPSS rescore
  17. 2026-06-16 17:49 UTCEPSS rescore
  18. 2026-06-15 17:43 UTCEPSS rescore
  19. 2026-06-14 23:13 UTCEPSS rescore
  20. 2026-06-14 23:13 UTCEPSS rescore
  21. 2026-06-13 22:56 UTCEPSS rescore
  22. 2026-06-12 23:08 UTCEPSS rescore
  23. 2026-06-11 13:55 UTCEPSS rescore
  24. 2026-06-10 22:13 UTCEPSS rescore
  25. 2026-06-08 14:13 UTCEPSS rescore
Show 19 more
  1. 2026-06-07 15:21 UTCEPSS rescore
  2. 2026-06-05 22:43 UTCEPSS rescore
  3. 2026-06-05 22:43 UTCEPSS rescore
  4. 2026-06-05 06:07 UTCEPSS rescore
  5. 2026-06-02 20:10 UTCEPSS rescore
  6. 2026-06-01 13:49 UTCEPSS rescore
  7. 2026-06-01 13:49 UTCEPSS rescore
  8. 2026-05-31 16:24 UTCEG score recompute
  9. 2026-05-31 16:24 UTCGHSA enrichment
  10. 2026-05-31 00:13 UTCEPSS rescore
  11. 2026-05-31 00:13 UTCEPSS rescore
  12. 2026-05-29 13:40 UTCEPSS rescore
  13. 2026-05-29 13:40 UTCEPSS rescore
  14. 2026-05-24 16:42 UTCEPSS rescore
  15. 2026-05-20 22:36 UTCEPSS rescore
  16. 2026-05-20 11:20 UTCEPSS rescore
  17. 2026-05-20 11:20 UTCEPSS rescore
  18. 2026-05-18 21:29 UTCEPSS rescore
  19. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(2 references)

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

  • Exploit-DBEDB-16595✓ verified
    First seen May 9, 2010

    Norton AntiSpam 2004 - SymSpamHelper ActiveX Control Buffer Overflow (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/browser/nis2004_antispam✓ verified
    First seen Mar 19, 2004

    Norton AntiSpam 2004 SymSpamHelper ActiveX Control Buffer Overflow

    Open source ↗

Frequently asked(4)

What is CVE-2004-0363?
CVE-2004-0363 is a none vulnerability published on April 15, 2004. Stack-based buffer overflow in the SymSpamHelper ActiveX component (symspam.dll) in Norton AntiSpam 2004, as used in Norton Internet Security 2004, allows remote attackers to execute arbitrary code via a long parameter to the LaunchCustomRuleWizard method.
When was CVE-2004-0363 disclosed?
CVE-2004-0363 was first published in the National Vulnerability Database on April 15, 2004, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2004-0363 actively exploited?
CVE-2004-0363 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2004-0363?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-0363, 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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