CVE-2011-1239: n/a vulnerability

CVE-2011-1239: Use-after-free vulnerability in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3,...

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 SP1 and SP2, Windows Server 2008 Gold, 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, a different vulnerability than other "Vulnerability Type 1" CVEs listed in MS11-034, aka "Win32k Use After Free Vulnerability."

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 22:21 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2011-1239 is a Windows kernel driver flaw that could let someone who can run code on an affected machine gain higher privileges. It matters mainly for legacy Windows estates. The bundle does not show active exploitation or a CVSS score. Likely exposure is legacy Windows XP, Server 2003, Vista, Server 2008, and Windows 7 systems matching the service packs listed in the CVE description and MS11-034. Treat this as high priority if any listed legacy Windows systems remain in business operations. It is not a remote entry point, but it can turn a local foothold into system-level control. Mitigation focus: Review Microsoft MS11-034 and apply the relevant security update where applicable.; Identify and isolate unsupported legacy Windows systems until patched or retired.; Restrict interactive logon and application execution on affected machines..

Prepared: Jun 24, 2026, 13:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2011-1239 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Apr 13, 2011, 20:07 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
mswin-win32k-var27-priv-escalation(66421)CVE reference · vdb-entry, x_refsource_XF
MS11-034CVE reference · vendor-advisory, x_refsource_MS
oval:org.mitre.oval:def:11726CVE reference · vdb-entry, signature

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.