CVE-2024-40083
Published: 21 October 2024
Summary
CVE-2024-40083 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Vilo (inferred from references). Its CVSS base score is 9.6 (Critical).
Operationally, ranked in the top 8.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A buffer overflow vulnerability exists in the local_app_set_router_token function of the Vilo 5 Mesh WiFi System on versions up to and including 5.16.1.33. The flaw, tracked as CVE-2024-40083 and assigned CWE-120, occurs when sscanf reads the token and timezone fields from JSON input into a fixed-length buffer without bounds checking.
Remote unauthenticated attackers with adjacent network access can exploit the issue to execute arbitrary code on the device. The vulnerability carries a CVSS 3.1 score of 9.6, reflecting low attack complexity, no required privileges or user interaction, and high impact across confidentiality, integrity, and availability with a scope change to other components.
The EPSS exploitation probability stands at 0.0726 with no material rise from its peak value. The provided references consist of the vendor site and a technical disclosure from byu-cybersecurity-research but contain no details on patches or mitigations.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38405
Vulnerability details
A Buffer Overflow vulnerabilty in the local_app_set_router_token function of Vilo 5 Mesh WiFi System <= 5.16.1.33 allows remote, unauthenticated attackers to execute arbitrary code via sscanf reading the token and timezone JSON fields into a fixed-length buffer.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.