Internet Explorer 3.x to 4.01 allows a remote attacker to insert malicious content into a frame of another web site, aka frame spoofing.
https://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-020
Source: Mitre, NVD
Published: 1998-12-01
Updated: 2026-06-16
Base Score: 2.6
Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N
Severity: Low
Base Score: 4.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Severity: Medium
EPSS: 0.14189