Cyber Resilience

CVE-2024-43505

Microsoft Office Long Term Servicing Channel 2021 … 2024

Published
08 October 2024
Modified
17 October 2024
Patch / advisory
View advisory
CVSS Score v3.1 7.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0075 52th percentile
Risk Priority 59 floored blend · peak EPSS

Summary

CVE-2024-43505 is a high-severity Insufficient UI Warning of Dangerous Operations (CWE-357) vulnerability in Microsoft Office Long Term Servicing Channel. Its CVSS base score is 7.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique User Execution (T1204); ranked in the top 48% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

Microsoft Office Visio Remote Code Execution Vulnerability

CWE(s)
CWE-357NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise Techniques

T1204 User Execution Execution
An adversary may rely upon specific actions by a user in order to gain execution.
attack.mitre.org →
T1204.001 Malicious Link Execution
An adversary may rely upon a user clicking a malicious link in order to gain execution.
attack.mitre.org →
T1204.002 Malicious File Execution
An adversary may rely upon a user opening a malicious file in order to gain execution.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-33149Same product: Microsoft 365 Apps
CVE-2024-38021Same product: Microsoft 365 Apps
CVE-2024-49059Same product: Microsoft 365 Apps
CVE-2023-33152Same product: Microsoft 365 Apps
CVE-2023-36767Same product: Microsoft 365 Apps
CVE-2025-47967Same vendor: Microsoft
CVE-2024-49054Same vendor: Microsoft
CVE-2024-43616Same product: Microsoft 365 Apps
CVE-2023-33153Same product: Microsoft 365 Apps
CVE-2023-28311Same product: Microsoft 365 Apps

Affected Assets

microsoft
365 apps
all versions
microsoft
office
2019
microsoft
office long term servicing channel
2021, 2024

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly encompass designing noticeable UI warnings for risky operations.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development and acceptance validates that dangerous-operation warnings are sufficiently prominent.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle requires usable security prompts and warnings to be designed into the UI.

A.8.26 Application security requirements partial match
prevents

Application security requirements include clear, effective user warnings for dangerous operations.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure system architecture and engineering principles address usable security mechanisms such as prominent warnings.

A.8.28 Secure coding partial match
prevents

Secure coding practices include implementing noticeable, effective UI warnings for risky actions.

References