Security readout for executives and security teams
Plain-English summary
This flaw can let a locally authenticated, low-privilege user expose sensitive information through Windows ReFS. It does not directly allow data modification or service disruption. Business urgency is moderate because exploitation requires prior local access, but disclosed data could support further compromise.
Executive priority
Schedule remediation through the normal security-update cycle, accelerating systems with ReFS, sensitive data, shared local access, or existing compromise indicators. This is not supported as an emergency internet-wide threat, but delayed patching can increase confidentiality risk during another intrusion.
Technical view
CVE-2024-43500 is a ReFS information-disclosure issue categorized as CWE-126, an out-of-bounds read. CVSS 3.1 scores it 5.5: local access, low complexity, low privileges, no user interaction, and high confidentiality impact, with no stated integrity or availability impact.
Likely exposure
Exposure is limited to the listed Windows 11 and Windows Server builds, particularly systems using or processing ReFS volumes. The bundle does not establish whether every listed system enables ReFS or reaches the vulnerable code path, so asset-level confirmation is required.
Exploitation context
The source bundle does not report CISA KEV listing or active exploitation. Its CVSS temporal metric marks exploit maturity as unproven. Local access and low privileges are required, reducing initial-access risk but leaving already-compromised or shared systems potentially exposed.
Researcher notes
The supplied evidence identifies the weakness class and CVSS characteristics but provides no technical root cause, exposed data type, attack-path detail, or proof-of-concept status beyond “unproven.” Validate product and build naming against Microsoft’s current advisory, especially where the supplied affected-product labels overlap or appear inconsistent.
Mitigation direction
- Apply the Microsoft security update identified for CVE-2024-43500.
- Prioritize affected systems using ReFS or handling sensitive information.
- Restrict unnecessary local access and low-privilege accounts until updates are confirmed.
- Check current Microsoft guidance for superseding updates or deployment requirements.
Validation and detection
- Inventory the listed Windows editions and compare their installed builds with the advisory.
- Identify affected hosts that use or process ReFS volumes.
- Verify the applicable Microsoft security update installed successfully on each exposed host.
- Monitor local account activity for unusual access to ReFS-backed data.
- Retest update compliance after reboot or maintenance, where required by Microsoft guidance.
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-126: 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 lookupCVE-2024-43500 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
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.
SSVC decision data
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C1.83.6microsoftVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Windows Resilient File System (ReFS) Information Disclosure VulnerabilityCVE reference, microsoft · vendor-advisory, patch
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.
Buffer Over-read
Buffer Over-read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.