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Vulnerability record · CVE-1999-0858 · published 2 December 1999

CVE-1999-0858: Microsoft internet explorer vulnerability

Microsoft · Internet Explorer

Internet Explorer 5 allows a remote attacker to modify the IE client's proxy configuration via a malicious Web Proxy Auto-Discovery (WPAD) server.

5.0 CVSS 2.0 Medium EPSS 14% · top 3.7% CWE-16 · CWE-16
5.0CVSS 2.0 base score
14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Internet Explorer 5 allows a remote attacker to modify the IE client's proxy configuration via a malicious Web Proxy Auto-Discovery (WPAD) server.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ247333
http://www.securityfocus.com/bid/846
https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-054
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ247333
http://www.securityfocus.com/bid/846
https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-054

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-1999-0858), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.