Security readout for executives and security teams
Plain-English summary
CVE-2013-3907 is a Microsoft Windows local privilege escalation issue in the portcls.sys kernel-mode driver. An attacker already able to run a crafted application on an affected system could gain higher privileges. The main business risk is legacy Windows exposure where MS13-101 was not applied.
Executive priority
Prioritize remediation if legacy Windows systems remain in production, especially shared, remote-access, kiosk, or multi-user environments. If affected versions are absent or patched, urgency is lower.
Technical view
The source describes a Port-Class Driver Double Fetch Vulnerability in portcls.sys affecting Windows Vista SP2, Server 2008 SP2/R2 SP1, Windows 7 SP1, Windows 8, Server 2012, and Windows RT. The attack vector is local, via a crafted application, with privilege escalation impact.
Likely exposure
Exposure is most likely on legacy or unpatched Windows systems matching the affected versions listed by Microsoft and CVE records. Modern supported Windows versions are not identified in the provided bundle.
Exploitation context
The provided bundle does not show CISA KEV listing or active exploitation evidence. This is not described as remotely exploitable; an attacker needs local code execution first.
Researcher notes
Evidence is limited to CVE and Microsoft advisory metadata. The bundle identifies affected operating systems, local attack vector, and privilege escalation impact, but provides no CVSS, CWE, exploit status, or detailed mitigation beyond vendor advisory linkage.
Mitigation direction
- Apply Microsoft’s MS13-101 security update where applicable.
- Inventory systems running the affected Windows versions.
- Retire, isolate, or tightly restrict unsupported legacy Windows hosts.
- Check Microsoft guidance for exact update applicability.
- Reduce local user access on remaining legacy systems.
Validation and detection
- Confirm whether each host runs an affected Windows version.
- Verify MS13-101 or superseding Microsoft updates are installed.
- Identify legacy systems still allowing interactive or local application execution.
- Review vulnerability scanner findings against Microsoft advisory scope.
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-2013-3907 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
- MS13-101CVE 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.