CVEvulnerability

CVE-2011-1271

7.7 HIGH Published 2011-05-10 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2011-05-10
Last modified
2026-06-16
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.7 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS 2.0 ([email protected])
5.1 MEDIUM — AV:N/AC:H/Au:N/C:P/I:P/A:P
Weaknesses
CWE-264, CWE-476

Description

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 configurations

• microsoft .net framework 4.0 • microsoft .net framework 3.5.1 • microsoft .net framework 2.0 • microsoft .net framework 3.5

Related

Weakness · not in database (1)

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References