Improper input validation in Microsoft Internet Explorer

CVE-2011-1962

Microsoft Internet Explorer 6 through 9 does not properly handle unspecified character sequences, which allows remote attackers to read content from a different (1) domain or (2) zone via a crafted web site that triggers "inactive filtering," aka "Shift JIS Character Encoding Vulnerability."

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2011-08-10 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.133 (96.3th percentile), scored 2026-10-02.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.133 · newest: 0.133 · change: 0.000

Affected products

Microsoft Internet Explorer — versions 6, 7, 8
Microsoft Windows 7
Microsoft Windows Server 2003
Microsoft Windows Server 2008 — versions r2
Microsoft Windows Vista
Microsoft Windows Xp

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057 (vendor-advisory, Patch, Vendor Advisory)
oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:12657 (Tool Signature, signature, vdb-entry)