Security readout for executives and security teams
Plain-English summary
CVE-2024-38149 is a Microsoft BranchCache denial-of-service vulnerability. An unauthenticated network attacker could cause loss of availability on affected Windows systems. It does not indicate data theft or privilege escalation in the provided sources, but availability impact is high and Microsoft lists patches.
Executive priority
Prioritize within the normal high-severity Windows patch cycle, with faster handling for BranchCache-dependent or highly available services. Business risk is service disruption rather than known data compromise, based on the provided evidence.
Technical view
The CVSS 3.1 vector is 7.5 high: network-accessible, low complexity, no privileges, no user interaction, unchanged scope, availability high only. Microsoft maps the issue to CWE-400 resource consumption and lists affected Windows 10, Windows 11, and Windows Server releases.
Likely exposure
Exposure is likely in organizations running the listed Windows client or server versions, especially where BranchCache is enabled or reachable. The provided bundle does not prove exposure for every Windows host or identify exact network conditions beyond CVSS network attack vector.
Exploitation context
The source bundle marks KEV as false and provides no cited evidence of active exploitation. Microsoft’s CVSS temporal data lists exploit code maturity as unproven. Treat this as a patch-priority availability risk, not a confirmed active campaign.
Researcher notes
Evidence is limited to Microsoft and CVE metadata. No root-cause detail, affected component internals, exploit method, or workaround is provided in the bundle. Avoid asserting exploitability beyond the CVSS vector and Microsoft’s denial-of-service classification.
Mitigation direction
- Apply Microsoft security updates referenced by the MSRC advisory.
- Prioritize BranchCache-enabled Windows servers and widely reachable endpoints.
- Check MSRC guidance before changing BranchCache configuration.
- Track legacy Windows Server systems separately for update eligibility.
- Confirm patch deployment through endpoint or server management reporting.
Validation and detection
- Inventory systems matching Microsoft’s affected Windows versions.
- Confirm whether BranchCache is enabled or operational on those systems.
- Verify applicable Microsoft updates are installed successfully.
- Review availability incidents on BranchCache-related systems after patching.
- Recheck the MSRC advisory for revision or supersedence notes.
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.
CWE-400: 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-2024-38149 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C3.93.6microsoftVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/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
- BranchCache Denial of Service 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.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.