CVE-2004-0363

CVE-2004-0363 is a high-severity vulnerability in Symantec Norton Antispam with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 67% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

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.

Frequently asked questions

What is CVE-2004-0363?
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.
How severe is CVE-2004-0363?
CVE-2004-0363 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0363 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 67% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0363?
CVE-2004-0363 affects Symantec Norton Antispam. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-0363?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2004-0363 published?
CVE-2004-0363 was published on 2004-04-15 and last updated on 2026-06-16.

References

Affected products (1)

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