Security readout for executives and security teams
Plain-English summary
This flaw weakens Internet Explorer Protected Mode on affected Windows versions. An attacker who already gains code execution inside a low-integrity browser process could move to medium integrity, reducing the browser sandbox’s protection and increasing business risk on legacy endpoints.
Executive priority
Treat this as a legacy-browser risk requiring cleanup rather than an internet-wide emergency. Prioritize remediation where old Internet Explorer remains available for business workflows or on systems that browse untrusted content.
Technical view
CVE-2013-3186 is an Internet Explorer 7 through 10 Protected Mode integrity-level assignment flaw on listed Windows releases. It allows remote attackers to obtain medium-integrity privileges by leveraging access to a low-integrity process. Sources do not provide CVSS, CWE, or exploit details.
Likely exposure
Exposure is most likely on legacy systems running Internet Explorer 7, 8, 9, or 10 on the Windows versions named in the CVE description. Modern environments without those browser and OS combinations are unlikely to be exposed.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. The described attack requires leveraging access to a low-integrity process, so this is most concerning when combined with another browser compromise path.
Researcher notes
The available evidence defines the affected versions and privilege-boundary impact but lacks CVSS, CWE, and exploit telemetry. Avoid treating it as standalone remote code execution; assess it as a Protected Mode escape risk that may amplify another compromise.
Mitigation direction
- Apply Microsoft MS13-059 updates where the affected platforms remain in use.
- Inventory and remove Internet Explorer 7 through 10 from supported workflows.
- Retire or isolate legacy Windows systems that cannot receive the vendor update.
- Restrict web browsing from legacy systems until remediation is confirmed.
Validation and detection
- Identify endpoints running affected Internet Explorer and Windows version combinations.
- Confirm MS13-059 or equivalent vendor security update is installed.
- Use the referenced OVAL definition for configuration or vulnerability scanning where supported.
- Review browser-use policies for legacy systems still accessing untrusted websites.
Public sources used
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.
CVE-2013-3186 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 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
- MS13-059CVE reference · vendor-advisory, x_refsource_MS
- oval:org.mitre.oval:def:18031CVE 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.