Vulnerability Report

CVE-2011-2011

Title: Microsoft Windows 2003 Server Auth Bypass

Auth Bypass

Proof Of Concept

PoC Available for CVE-2011-2011

CWE Category CWE-399

Published Date Oct 12, 2011

Modified Date Jun 16, 2026

Exploit Status Available

Score 7.2 CVSS v2.0

Exploit Probability (EPSS)

1.79%

Vulnerability Summary

CVE-2011-2011: Use-after-free vulnerability in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application that leverages incorrect driver object management, aka "Win32k Use After Free Vulnerability."

Impacted Vendors

microsoft 6

Reference Links

http://www.securityfocus.com/bid/49981 http://www.securitytracker.com/id?1026165 https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12904 http://www.securityfocus.com/bid/49981 http://www.securitytracker.com/id?1026165 https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12904

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.2

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-2011 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/mpgn/BEAST-PoC

View Code

GitHub https://github.com/ikkisoft/ParrotNG

View Code

GitHub https://github.com/pwntester/SpringBreaker

View Code

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 29, 2026 MODIFIED

Vulnerability data updated via NVD.

April 11, 2025 MODIFIED

Vulnerability data or affected products updated.

October 12, 2011 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected Stack

No specific products linked.