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Fencer Vulns
high 7.5

CVE-2004-0363 in the critical feed json

Stack-based buffer overflow in the SymSpamHelper ActiveX component (symspam.dll) in Norton AntiSpam 2004, as used in Norton Internet Securi…

published 2004-03-23 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0363

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
66.6%
EPSS 66.6% chance of exploitation in 30 days, percentile 99.2%
public exploits
2
Metasploit, Exploit-DB

Summary

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.

Patch / fix

Timeline

  1. First public exploit (Metasploit exploit/windows/browser/nis2004_antispam)
  2. Published

Exploit prediction

66.57% chance of exploitation in the next 30 days, higher than 99.2% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.