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Case File

CVE-2011-1998

HIGH · CVSS 9.3 EPSS 21.23% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2011-10-12 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

Exhibit — Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2011-1998
Severity
HIGH
CVSS
9.3
EPSS
21.23%
Microsoft

Original Filing — NVD Description

Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that was not properly initialized, aka "Jscript9.dll Remote Code Execution Vulnerability."