CVE-2011-1238: n/a vulnerability

CVE-2011-1238: 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-2011-1238 is an old Windows kernel bug that could let someone already able to run code on an affected machine gain higher privileges. The business risk is concentrated in legacy, unpatched Windows systems still present in production, labs, OT, or vendor appliances. Exposure is most likely where affected legacy Windows versions remain unpatched. The source bundle does not identify affected third-party products beyond Microsoft Windows, despite an Avaya reference. Current supported Windows releases are not listed as affected in the provided sources. Prioritize this where legacy Windows still supports business operations. It is not a remote entry-point issue by itself, but it can turn a low-privilege foothold into system-level compromise on affected machines. Mitigation focus: Apply the Microsoft security update referenced in MS11-034 where applicable.; Identify and retire unsupported affected Windows versions where patching is unavailable.; Restrict interactive and remote logon rights on legacy Windows systems..

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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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-var26-priv-escalation(66420)CVE reference · vdb-entry, x_refsource_XF
MS11-034CVE reference · vendor-advisory, x_refsource_MS
oval:org.mitre.oval:def:12417CVE 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

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