Security readout for executives and security teams
This is a critical remote code execution flaw in Microsoft Internet Explorer 9 and 10. A malicious website could trigger memory corruption and let an attacker run code in the browser context. The main business risk is legacy desktops or systems still using these IE versions. Exposure is most likely in legacy Windows environments, kiosks, application-compatibility desktops, or unmanaged systems where Internet Explorer 9 or 10 remains installed or usable. The source bundle does not provide CPEs or full platform mapping. Prioritize remediation if any legacy IE 9 or 10 systems remain in production. For fully modernized fleets, urgency is lower but still worth validating because old browsers often survive in compatibility workflows. Mitigation focus: Apply Microsoft guidance and the MS12-077 security update where applicable.; Retire or disable Internet Explorer 9 and 10 wherever business processes allow.; Restrict legacy browser access to trusted internal sites only..
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
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ATT&CK lookup starting points
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CWE-416: Exact CWE lookup
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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-2012-4787 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
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:C/C:H/I:H/A:H2.26Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9CriticalVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- MS12-077CVE reference · vendor-advisory, x_refsource_MS
- oval:org.mitre.oval:def:16211CVE reference · vdb-entry, signature
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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.