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Fencer Vulns
medium 5.0

CVE-2000-0478 json

In some cases, Norton Antivirus for Exchange (NavExchange) enters a "fail-open" state which allows viruses to pass through the server.

published 2000-06-14 26 y ago modified 2026-06-16 4 mo ago also EUVD-2000-0477

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

In some cases, Norton Antivirus for Exchange (NavExchange) enters a "fail-open" state which allows viruses to pass through the server.

Exploit prediction

2.00% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • securityfocus.com http://www.securityfocus.com/bid/1351 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

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.