Security readout for executives and security teams
Plain-English summary
CVE-2024-43555 is a Windows Mobile Broadband Driver denial-of-service flaw. A successful attack could disrupt availability of affected Windows systems, not steal data or change files. The provided CVSS vector limits attack reach to adjacent access, so urgency is lower than internet-exposed remote code execution but still meaningful for mobile broadband-capable fleets.
Executive priority
Handle in the regular Microsoft patch cycle, with faster action for mobile broadband-enabled laptops or sensitive operational environments. Business impact is availability disruption rather than data compromise, and provided evidence does not show active exploitation.
Technical view
Microsoft describes this as a denial-of-service vulnerability in the Windows Mobile Broadband Driver. The CVSS 3.1 score is 6.5 with adjacent attack vector, low complexity, no privileges, no user interaction, and high availability impact. The listed weakness is CWE-125, out-of-bounds read. Microsoft’s advisory is tagged as a patch source.
Likely exposure
Exposure applies to listed Windows 10, Windows 11, Windows Server 2019, and Windows Server 2022 23H2 Server Core versions. Practical exposure is most relevant where affected systems have the Mobile Broadband Driver present or mobile broadband functionality enabled. The supplied CVSS indicates adjacent, not internet-wide, reach.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. CVSS marks exploit code maturity as unproven. Treat this as a patch-management issue with availability risk, not as a confirmed actively exploited campaign based on provided evidence.
Researcher notes
Key constraints are AV:A, UI:N, PR:N, and A:H. The vulnerability is associated with CWE-125, suggesting an out-of-bounds read condition, but the bundle provides no root-cause detail, exploit primitive, crash signature, or workaround beyond Microsoft patch availability.
Mitigation direction
- Apply Microsoft’s security update for CVE-2024-43555 through normal Windows patch channels.
- Prioritize affected endpoints using mobile broadband capabilities or operating in higher-risk adjacent-network environments.
- Confirm Windows Server and Server Core assets are included in patch compliance checks.
- Review MSRC guidance for any supersedence or product-specific deployment details.
- If patching is delayed, increase monitoring for availability issues on exposed systems.
Validation and detection
- Inventory affected Windows versions and build numbers listed in the source bundle.
- Verify Microsoft update installation status for CVE-2024-43555 across endpoint and server fleets.
- Check whether mobile broadband-capable devices are present in high-priority business groups.
- Review reliability and endpoint telemetry for repeated driver-related crashes or denial-of-service symptoms.
- Document exceptions and recheck them against current MSRC guidance.
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-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 lookupCVE-2024-43555 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
- No
- Published
Vector: CVSS:3.1/AV:A/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:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C2.83.6microsoftVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:A/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
- Windows Mobile Broadband Driver 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.
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.