Raw vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2024-23973 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Silabs Gecko Os. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked at the 43th 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 SI-10 (Information Input Validation) — 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-2024-23973 is a stack-based buffer overflow vulnerability (CWE-120) in Silicon Labs Gecko OS, stemming from inadequate validation of the length of user-supplied data in HTTP GET request handling before copying it to a stack-based buffer. This flaw affects installations of the Gecko OS, enabling network-adjacent attackers to execute arbitrary code in the context of the device without requiring authentication. The vulnerability carries a CVSS v3.1 base score of 8.8 (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its potential for confidentiality, integrity, and availability impacts.
Network-adjacent attackers, positioned on the same local network segment as the affected device, can exploit this vulnerability by sending crafted HTTP GET requests. No privileges or user interaction are needed, allowing low-complexity exploitation that grants remote code execution on the device itself.
Silicon Labs and Zero Day Initiative have published advisories detailing the issue, available at https://community.silabs.com/a45Vm0000000Atp and https://www.zerodayinitiative.com/advisories/ZDI-24-873/, respectively, which security practitioners should consult for patch information and mitigation guidance.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-21399
Vulnerability Data
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Silicon Labs Gecko OS. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HTTP GET requests. The issue results from…
more
the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V5.2.1
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and analysis can find missing size checks before deployment.
Input validation directly enforces size checks before buffer copies.
Engineering principles require bounds checking and safe buffer handling in design.
Memory protection limits the impact of an overflow once it occurs.
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.
Vulnerability identification processes such as code review or scanning detect classic buffer overflows before exploitation.
Routine patching replaces vulnerable code containing unchecked buffer copies with corrected versions.
Secure development practices directly enforce bounds checking and input validation that prevent classic buffer overflows.
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.