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CVE Record

CVE-2011-0664: Microsoft .NET Framework 2.0 SP1 and SP2, 3.5 Gold and SP1, 3.5.1, and 4.0, and Silverlight 4 before 4.0.60...

Microsoft .NET Framework 2.0 SP1 and SP2, 3.5 Gold and SP1, 3.5.1, and 4.0, and Silverlight 4 before 4.0.60531.0, does not properly validate arguments to unspecified networking API functions, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, (3) a crafted .NET Framework application, or (4) a crafted Silverlight application, aka ".NET Framework Array Offset Vulnerability."

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This is a legacy Microsoft .NET Framework and Silverlight remote code execution issue. A remote attacker could trigger arbitrary code execution through crafted XBAP, ASP.NET, .NET Framework, or Silverlight application content. Business urgency depends on whether old .NET or Silverlight runtimes remain in use.

Executive priority

Prioritize this for legacy exposure management. It is an old but potentially severe remote code execution vulnerability, so the main risk is forgotten unsupported runtime installations rather than newly disclosed exploit activity.

Technical view

CVE-2011-0664 is the .NET Framework Array Offset Vulnerability. The source states affected Microsoft .NET Framework 2.0 SP1/SP2, 3.5 Gold/SP1, 3.5.1, 4.0, and Silverlight 4 before 4.0.60531.0 improperly validate arguments to unspecified networking API functions, enabling remote code execution through crafted application content.

Likely exposure

Exposure is most likely on legacy Windows systems, servers, browsers, or applications still using the listed .NET Framework versions or Silverlight 4 before 4.0.60531.0. Internet-facing ASP.NET applications and endpoints able to load XBAP or Silverlight content deserve priority review.

Exploitation context

The provided sources describe remote attacker-controlled crafted application content as the trigger. The bundle does not cite active exploitation, and KEV is false, so active exploitation should not be claimed from this evidence alone.

Researcher notes

Evidence is limited to CVE description, Microsoft advisory reference, and OVAL detection reference. The bundle does not provide CVSS, CWE, detailed root cause, specific KB mappings, or confirmed exploitation. Avoid inferring broader affected products beyond the listed .NET Framework and Silverlight versions.

Mitigation direction

  • Apply Microsoft guidance from MS11-039 to affected .NET Framework installations.
  • Update Silverlight 4 to 4.0.60531.0 or later where still present.
  • Remove Silverlight or XBAP support where no longer required.
  • Prioritize remediation on internet-facing ASP.NET systems and legacy user endpoints.
  • Check vendor guidance for exact update packages and supported upgrade paths.

Validation and detection

  • Inventory systems for the affected .NET Framework and Silverlight versions.
  • Confirm MS11-039 remediation status through approved patch management records.
  • Use the referenced OVAL definition where compatible with your scanning platform.
  • Review internet-facing ASP.NET applications for legacy runtime dependencies.
  • Document any systems that cannot be patched and track compensating controls.
Prepared
Confidence
medium
Sources
4

Public sources used

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2011-0664 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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
3Source links

CVSS and timeline data

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

Source materials

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.