Security readout for executives and security teams
Plain-English summary
This Windows vulnerability can expose NTLM hashes after a user interaction, creating credential-theft risk. Microsoft rates it medium, but CISA KEV listing means known exploitation has occurred, so organizations should treat it as urgent for affected Windows endpoints and servers.
Executive priority
Prioritize remediation because credential exposure can support follow-on compromise, and CISA KEV confirms exploitation despite a medium base score.
Technical view
CVE-2024-43451 is an NTLM hash disclosure spoofing flaw affecting multiple supported and legacy Windows client and server versions. The CVSS vector indicates network reachability, low attack complexity, no privileges required, required user interaction, and high confidentiality impact only.
Likely exposure
Exposure is likely wherever listed Windows versions remain unpatched, especially user-facing endpoints or servers where users process external content and NTLM authentication is present.
Exploitation context
CISA KEV status supports known exploitation. The provided sources do not include exploit mechanics, affected configurations beyond Windows versions, or campaign details, so operational assumptions should be limited.
Researcher notes
Evidence supports confidentiality impact through NTLM hash disclosure with user interaction required. Sources do not provide safe details on trigger paths, exploit reliability, or specific post-exploitation behavior.
Mitigation direction
- Apply the Microsoft security update for each affected Windows version.
- Prioritize KEV remediation on internet-facing and user-facing Windows systems.
- Confirm legacy Windows Server 2008 and older Windows 10 systems receive applicable guidance.
- Track exceptions through the organization’s KEV remediation process.
- Review MSRC guidance for any product-specific prerequisites or supersedence notes.
Validation and detection
- Inventory Windows builds against the affected version list.
- Verify the relevant Microsoft update is installed on each affected system.
- Confirm vulnerability scanner detections clear after patching.
- Review CISA KEV status in risk tracking records.
- Document any unpatched systems with owner, reason, and remediation date.
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-73: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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-2024-43451 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
- 6.5 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:F/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.
CISA KEV status
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:R/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- NTLM Hash Disclosure Spoofing VulnerabilityCVE reference · vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-43451CVE reference · government-resource
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.
External Control of File Name or Path
External Control of File Name or Path represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.