CVE-2011-1271
High · 7.7CVSS
7.7
EPSS
20.1%
Published
May 10, 2011
CISA due date
—
The record
The JIT compiler in Microsoft .NET Framework 3.5 Gold and SP1, 3.5.1, and 4.0, when IsJITOptimizerDisabled is false, does not properly handle expressions related to null strings, which allows context-dependent attackers to bypass intended access restrictions, and consequently execute arbitrary code, in opportunistic circumstances by leveraging a crafted application, as demonstrated by (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, or (3) a crafted .NET Framework application, aka ".NET Framework JIT Optimization Vulnerability."
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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Related vulnerabilities
- CVE-2026-81644 DoS vulnerability in the preview service module. CWE-264
- CVE-2026-49315 DoS vulnerability in the input device module. CWE-264
- CVE-2026-49313 Permission control vulnerability in the app lock module. CWE-264
- CVE-2026-49312 Permission control vulnerability in the window module. CWE-264
- CVE-2026-49310 Permission control vulnerability in the event notification module. CWE-264
- CVE-2026-41987 Permission control vulnerability in the app management module. CWE-264
- CVE-2026-49309 Permission control vulnerability in the Settings module. CWE-264
- CVE-2026-49308 Permission control vulnerability in the clipboard module. Impact: Successful exploitation… CWE-264