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CVE-1999-0347

HighPublished

Internet Explorer 4.01 allows remote attackers to read local files and spoof web pages via a "%01" character in an "about:" Javascript URL, which causes...

Published: Feb 4, 2000
Updated: Aug 1, 2024
Assigning CNA: mitre
Evidence observed: Jan 28, 1999

Primary CVSS

10.0/ 10High

nvd · CVSS 2.0

AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS probability estimate

7.5%

Low · next 30 days

Percentile: 94.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Internet Explorer 4.01 allows remote attackers to read local files and spoof web pages via a "%01" character in an "about:" Javascript URL, which causes Internet Explorer to use the domain specified after the character.

Sources

Microsoft Internet Explorer 5.0.1 - Invalid Byte Cross-Frame AccessExploit
Georgi Guninski · windows · Jan 28, 1999

Responsible use

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