Internet Explorer 5.5 and earlier does not properly verify the domain of a frame within a browser window, which allows remote web site operators to read certain files on the client by sending information from a local frame to a frame in a different domain, aka a variant of the "Frame Domain Verification" vulnerability.

References

• https://nvd.nist.gov/vuln/detail/CVE-2001-0246
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-027