Security readout for executives and security teams
Plain-English summary
A flaw in Microsoft Visio can let malicious content run code when a user interacts with it. Successful exploitation could compromise sensitive information, alter data, or disrupt the affected computer. It is not described as remotely exploitable without user involvement.
Executive priority
Treat as a high-priority endpoint patching issue. User interaction reduces immediate risk, but successful exploitation could fully affect data confidentiality, integrity, and system availability. Prioritize exposed users and verify deployment coverage rather than relying solely on update approval status.
Technical view
CVE-2024-43463 is a use-after-free vulnerability, CWE-416, affecting listed Microsoft 365, Office, and Visio products. It has CVSS 3.1 score 7.8: local attack vector, low complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely where organizations operate the listed Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021, or Visio 2016 versions and users can interact with untrusted content. The supplied version data is limited, so confirm exact affected builds through Microsoft's advisory.
Exploitation context
The bundle does not identify this CVE as being in CISA KEV and provides no evidence of active exploitation. The CVSS exploit-maturity metric is unproven. Exploitation requires user interaction and could execute code in the affected user's context.
Researcher notes
The supplied evidence establishes CWE-416 and vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. It does not provide the vulnerable component, memory-lifecycle details, attack-file characteristics, affected build ranges, or detection indicators. Consult the Microsoft advisory for current product-specific applicability and update information.
Mitigation direction
- Apply the security update identified in Microsoft's CVE advisory.
- Inventory affected Office and Visio installations, including managed and unmanaged endpoints.
- Prioritize systems whose users regularly receive or process externally supplied Visio content.
- Until updated, limit interaction with untrusted Visio files using established organizational controls.
Validation and detection
- Compare installed product editions and builds with Microsoft's current affected-product table.
- Confirm the relevant Microsoft security update installed successfully across the endpoint fleet.
- Use endpoint management reporting to identify missing, failed, or deferred updates.
- Review security telemetry for suspicious activity following interaction with Visio content.
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-416: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-43463 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C1.85.9microsoftVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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
- Microsoft Office Visio Remote Code Execution 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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.