CVE-2026-83777
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk45th percentile - higher than 45% of all known CVEs
Summary
A heap-based buffer overflow in Windows Bluetooth Service allows an unauthorized attacker to elevate privileges over an adjacent network.
Risk Assessment
An attacker within adjacent network range (e.g., Bluetooth) could exploit this to escalate privileges, potentially leading to device compromise.
Recommendation
Apply security updates for Windows Bluetooth Service and disable Bluetooth if not in use.
Other vulnerabilities in Windows Bluetooth Service
See all- CVE-2026-83739High
Use after free in Windows Bluetooth Service allows an unauthorized attacker to execute code over an adjacent network.
- CVE-2026-69889High
Use after free in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-69448High
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-69398High
A race condition vulnerability in the Windows Bluetooth Service is caused by improper synchronization during concurrent execution on shared resources. It allows an authorized attacker to elevate privileges locally.
- CVE-2026-69388High
Use-after-free vulnerability in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-58538High
Heap-based buffer overflow in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-45605High
Use after free vulnerability in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
Original NVD description (English source)
Heap-based buffer overflow in Windows Bluetooth Service allows an unauthorized attacker to elevate privileges over an adjacent network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS