Security readout for executives and security teams
Plain-English summary
A flaw in Windows Remote Access Connection Manager could let an attacker gain greater control and compromise sensitive data, system integrity, or availability. Microsoft rates the issue at CVSS 8.1. Successful exploitation requires high complexity, but no privileges or user interaction according to the supplied vector.
Executive priority
Treat this as a high-priority patching issue, especially on critical servers and systems supporting remote access. High potential impact and unauthenticated network reachability increase concern, while high attack complexity and no supplied exploitation evidence reduce immediate emergency pressure. Track remediation to completion within the organization's high-severity service level.
Technical view
CVE-2024-38240 is a CWE-125 out-of-bounds read affecting specified Windows 10, Windows 11, and Windows Server releases. Its CVSS 3.1 vector indicates network reachability, high attack complexity, no required privileges, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impacts. The bundle does not describe attack mechanics or prerequisites.
Likely exposure
Exposure includes the listed Windows 10, Windows 11, and Windows Server builds, including several Server Core installations. The bundle does not establish whether particular Remote Access Connection Manager configurations or network controls alter exploitability. Organizations should compare deployed releases and patch levels with Microsoft's advisory.
Exploitation context
The supplied evidence does not establish active exploitation or a public exploit. The CVE is not listed as KEV in the bundle. Although network-accessible and unauthenticated according to the CVSS vector, exploitation is rated high complexity. Treat claims of exploitation cautiously unless corroborated by Microsoft, CISA, or another cited authoritative source.
Researcher notes
The evidence supports CWE-125 and the supplied CVSS characteristics, but not the vulnerable code path, triggering conditions, or resulting privilege boundary. The title classifies it as elevation of privilege, while the vector reports network access and broad impact. Review Microsoft's record for version-specific patches and revisions; do not infer exploitability from CVSS alone.
Mitigation direction
- Apply Microsoft's applicable security update for each affected Windows release.
- Use the Microsoft advisory to identify exact update packages and installation requirements.
- Prioritize affected servers and remote-access infrastructure based on business criticality and network exposure.
- Restrict unnecessary network access to affected services while remediation is pending.
- Check current Microsoft guidance for any newly published mitigations or prerequisites.
Validation and detection
- Inventory Windows editions, versions, builds, and Server Core installations.
- Compare each asset against the affected products in Microsoft's advisory.
- Confirm the applicable security update is installed successfully on every affected asset.
- Re-scan patched systems and investigate update failures or missing coverage.
- Monitor authoritative advisories for revised affected versions or exploitation evidence.
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-125: 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-38240 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
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C2.25.9microsoftVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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
- Windows Remote Access Connection Manager Elevation of Privilege 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.