Internet Explorer 5 allows a remote attacker to modify the IE client's proxy configuration via a malicious Web Proxy Auto-Discovery (WPAD) server.
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
Source: Mitre, NVD
Published: 1999-12-02
Updated: 2026-06-16
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: High
EPSS: 0.13133