EUVD-2026-72299
GHSA-9789-mpm3-jqwq
Severity by source
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
AV:A for BLE-range requirement; PR:L because description specifies authenticated peer despite vendor CVSS PR:N, pending clarification.
Primary rating from Vendor (YesWeHack).
CVSS VectorVendor: YesWeHack
Lifecycle Timeline
2DescriptionCVE.org
A buffer overflow in the Bluetooth Continuous Glucose Monitoring Service (CGMS) Record Access Control Point (RACP) write handler allows an authenticated BLE peer to overflow a 20-byte static buffer into adjacent BSS memory. The exploitable impact cannot be predetermined - it is entirely dependent on the linker-assigned BSS layout of the specific firmware build, which may vary.
AnalysisAI
Buffer overflow in Nordic Semiconductor's nRF Connect SDK Bluetooth CGMS RACP write handler allows an authenticated BLE peer within radio range to overflow a 20-byte static buffer into adjacent BSS memory. Exploitability and exact impact are build-specific: because BSS layout is determined at link time per firmware build, adjacent corrupted data may be security-neutral or may include function pointers or critical control structures enabling code execution or device crash. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target device must be running firmware built with Nordic's nRF Connect SDK that includes and enables the Bluetooth CGMS service with RACP support. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.7 with AV:A constrains attack surface to BLE radio range (typically 10-100 m), meaningfully below the internet-wide reach of AV:N vulnerabilities. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No specific patched SDK version is identified in the available data - the NVD CPE uses a version wildcard. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify all internal products, services, and IoT device deployments that integrate nRF Connect SDK and determine which ones include the Bluetooth CGMS service and vulnerable RACP handler. …
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today