Cyber Resilience

CVE-2024-50924

Silabs Z-Wave Software Development Kit ≤ 7.21.1

Public PoC
Published
10 December 2024
Modified
01 July 2025
CVSS Score v3.1 6.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0038 31th percentile
Risk Priority 50 floored blend · peak EPSS

Summary

CVE-2024-50924 is a medium-severity Improper Preservation of Permissions (CWE-281) vulnerability in Silabs Z-Wave Software Development Kit. Its CVSS base score is 6.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data from Local System (T1005); ranked at the 31th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to AC-16 (Security and Privacy Attributes) and AC-3 (Access Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

Insecure permissions in Silicon Labs (SiLabs) Z-Wave Series 700 and 800 v7.21.1 allow attackers to cause disrupt communications between the controller and the device itself via repeatedly sending crafted packets to the controller.

CWE(s)
CWE-281

Related Threats

MITRE ATT&CK Enterprise Techniques

T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1039 Data from Network Shared Drive Collection
Adversaries may search network shares on computers they have compromised to find files of interest.
attack.mitre.org →
T1080 Taint Shared Content Lateral Movement
attack.mitre.org →
T1552 Unsecured Credentials Credential Access
Adversaries may search compromised systems to find and obtain insecurely stored credentials.
attack.mitre.org →
T1555 Credentials from Password Stores Credential Access
Adversaries may search for common password storage locations to obtain user credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-50928Same product: Silabs Efr32Zg14P231F256Gm32
CVE-2024-50929Same product: Silabs Efr32Zg14P231F256Gm32
CVE-2024-50920Same product: Silabs Efr32Zg14P231F256Gm32
CVE-2024-50921Same product: Silabs Efr32Zg14P231F256Gm32
CVE-2024-50930Same product: Silabs Z-Wave Software Development Kit
CVE-2024-50931Same product: Silabs Z-Wave Software Development Kit
CVE-2024-22405Shared CWE-281
CVE-2024-41650Shared CWE-281
CVE-2024-54879Shared CWE-281
CVE-2024-53355Shared CWE-281

Affected Assets

silabs
z-wave software development kit
≤ 7.21.1

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

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Detect
Catch it (NIST detect / respond)

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Harden
Shrink the surface (DISA STIG)
  • 8 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)

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Mitigating Controls (NIST 800-53 r5) AI

AC-16 Security and Privacy Attributes good match

Associating and preserving security attributes (including permissions) with objects reduces the chance they are lost or weakened on copy/restore/share.

AC-3 Access Enforcement partial match

Enforcing approved authorizations for access directly stops objects from receiving or retaining less-restrictive permissions than intended.

AC-6 Least Privilege partial match

Least-privilege assignments limit the blast radius when permissions are incorrectly relaxed during copy/restore/share operations.

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.AA-05 mostly match
prevents

Enforcing least-privilege permission policies and reviews directly prevents incorrect permission propagation on copy/restore/share 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.5.15 Access control partial match
degrades

Access-control policy defines how permissions must be preserved when objects are copied or shared.

A.5.18 Access rights partial match
degrades

Access-rights provisioning and review processes directly address the risk of overly permissive copied objects.

A.8.2 Privileged access rights partial match
degrades

Privileged-access management includes rules for maintaining correct permissions on copied or restored data.

A.8.3 Information access restriction partial match
degrades

Information-access-restriction controls enforce least-privilege permissions that must be preserved during copy/restore operations.

A.8.32 Change management none match
none

Change-management procedures can require verification that permissions remain intact after modifications or restores.

A.8.9 Configuration management none match
none

Configuration baselines can embed permission settings, indirectly reducing the chance of incorrect preservation.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Windows Server 2019 (1 rule)
  • V-205743 Windows Server 2019 organization created Active Directory Organizational Unit (OU) objects must have proper access control permissions. prevents CWE-281
Windows Server 2022 (2 rules)
  • V-254393 Windows Server 2022 Active Directory Group Policy objects must have proper access control permissions. prevents CWE-281
  • V-254395 Windows Server 2022 organization created Active Directory Organizational Unit (OU) objects must have proper access control permissions. prevents CWE-281

References