Security readout for executives and security teams
This is a legacy Microsoft .NET Framework JIT compiler flaw. In specific circumstances, a crafted .NET-related application could bypass intended access restrictions and run arbitrary code. The risk is mainly for organizations still operating unpatched .NET Framework 3.5, 3.5.1, or 4.0 environments. Exposure is most likely on legacy Windows systems hosting or running affected .NET Framework 3.5 Gold/SP1, 3.5.1, or 4.0 applications, especially older ASP.NET, XBAP, or custom .NET workloads that have not received MS11-044 remediation. Treat this as a high-priority legacy remediation item, not an internet-wide emergency. Systems still running affected .NET versions may face code-execution impact, but the source bundle does not establish active exploitation. Focus on inventory, patch confirmation, and retirement of obsolete application hosts. Mitigation focus: Review and apply Microsoft MS11-044 guidance for affected .NET Framework deployments.; Prioritize patching legacy ASP.NET, XBAP, and custom .NET application hosts.; Retire or isolate unsupported .NET Framework workloads where patching is not possible..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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.
CWE-476: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution 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 lookupCVE-2011-1271 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
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.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L2.25.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.7HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Source materials
- CVE List V5 sourceCVE List V5
- oval:org.mitre.oval:def:12686CVE reference · vdb-entry, signature
- MS11-044CVE reference · vendor-advisory, x_refsource_MS
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.