CVE-2024-8361

Published

07 January 2025

Modified

15 April 2026

CVSS Score v3.1 7.5

Click a component to see what it means

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Score 0.0043 35th percentile

Risk Priority 57 floored blend · peak EPSS

Summary

CVE-2024-8361 is a high-severity Incorrect Calculation of Buffer Size (CWE-131) vulnerability in Silabs (inferred from references). Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 35th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-8 (Security and Privacy Engineering Principles) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2024-8361 is a vulnerability in SiWx91x devices where the SHA2/224 algorithm incorrectly returns a hash of 256 bits instead of the expected 224 bits. This discrepancy triggers a software assertion, resulting in a Denial of Service (DoS) condition. The affected component is part of the cryptographic implementation in these Silicon Labs devices.

The vulnerability has a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating it is exploitable over the network with low complexity, requiring no privileges or user interaction. A remote attacker can trigger the assertion by providing input that invokes the faulty SHA2/224 computation, causing the device to crash. If a watchdog timer is implemented, the device will restart after expiration; otherwise, recovery requires a hard reset. The issue is linked to CWE-131 (incorrect buffer size calculation) and CWE-617 (reachable assertion).

For mitigation details, refer to the Silicon Labs community advisory at https://community.silabs.com/068Vm00000I7zqo. The vulnerability was published on 2025-01-07.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2024-49626

Vulnerability Data

In SiWx91x devices, the SHA2/224 algorithm returns a hash of 256 bits instead of 224 bits. This incorrect hash length triggers a software assertion, which subsequently causes a Denial of Service (DoS). If a watchdog is implemented, device will restart…

after watch dog expires. If watchdog is not implemented, device can be recovered only after a hard reset

CWE(s): CWE-131 CWE-617

Related Threats

MITRE ATT&CK Enterprise Techniques

T1499.004 Application or System Exploitation Impact

Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.

attack.mitre.org →

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

T1499 Endpoint Denial of Service Impact

Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.

attack.mitre.org →

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1203 Exploitation for Client Execution Execution

Adversaries may exploit software vulnerabilities in client applications to execute code.

attack.mitre.org →

T1210 Exploitation of Remote Services Lateral Movement

Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.

attack.mitre.org →

Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-52952Shared CWE-617

CVE-2026-34986Shared CWE-131

CVE-2026-10822Shared CWE-617

CVE-2026-12413Shared CWE-617

CVE-2020-17087Shared CWE-131

CVE-2025-0395Shared CWE-131

CVE-2026-53091Shared CWE-131

CVE-2025-27074Shared CWE-131

CVE-2025-46688Shared CWE-131

CVE-2023-1175Shared CWE-131

Affected Assets

Silabs

—

inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer security testing and code review can discover incorrect buffer-size computations before deployment.

SA-8 Security and Privacy Engineering Principles partial match

Secure engineering principles directly require correct buffer-size arithmetic and bounds-checked allocation.

SI-10 Information Input Validation partial match

Input validation can enforce that supplied lengths or counts used in size calculations are within safe bounds.

SI-16 Memory Protection partial match

Memory-protection mechanisms limit the exploitability of an overflow that results from an incorrect size calculation.

SI-2 Flaw Remediation partial match

Flaw-remediation processes that include vulnerability scanning or static analysis will surface buffer-size errors.

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 prevent buffer-size miscalculations via coding standards, reviews, and testing, while fixing this single weakness only partially fulfills the broader control.

DE.CM-09 partial match

prevents

Runtime monitoring of software can detect assertion-triggered crashes as adverse events.

ID.RA-01 partial match

prevents

Vulnerability identification processes can discover and record reachable-assertion flaws before deployment.

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.8.28 Secure coding mostly match

degrades

Secure coding standards directly require correct buffer-size calculations.

A.8.29 Security testing in development and acceptance mostly match

finds

Security testing can detect buffer-size errors before release.

A.8.25 Secure development life cycle partial match

prevents

Secure development lifecycle mandates size-checking practices that reduce buffer-size miscalculations.

A.8.26 Application security requirements partial match

prevents

Application security requirements can specify buffer-size validation rules.