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Fencer Vulns
medium 5.1

CVE-2005-0054 json

Internet Explorer 5.01, 5.5, and 6 allows remote attackers to spoof a less restrictive security zone and execute arbitrary code via an HTML…

published 2005-02-08 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-0055

cvss
5.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
24.3%
EPSS 24.3% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

Internet Explorer 5.01, 5.5, and 6 allows remote attackers to spoof a less restrictive security zone and execute arbitrary code via an HTML page containing URLs that contain hostnames that have been double hex encoded, which are decoded twice to generate a malicious hostname, aka the "URL Decoding Zone Spoofing Vulnerability."

Patch / fix

Exploit prediction

24.30% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.1 AV:N/AC:H/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.