Bluetooth
CVE-2020-15802
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK
2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 5.9 (MEDIUM). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could bypass authentication mechanisms to gain unauthorized access by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth. Cross Transport Key Derivation in Bluetooth Core Specification v4.2 and v5.0 may permit an unauthenticated user to establish a bonding with one transport, either LE or BR/EDR, and replace a bonding already established on the opposing transport, BR/EDR or LE, potentially overwriting an authenticated key with an unauthenticated key, or a key with greater entropy with one with less. Affected products include: Bluetooth Bluetooth Core Specification. Version information: before 5.1.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth. Cross Transport Key Derivation in Bluetooth Core Specification v4.2 and v5.0 may permit an unauthenticated user to establish a bonding with one transport, either LE or BR/EDR, and replace a bonding already established on the opposing transport, BR/EDR or LE, potentially overwriting an authenticated key with an unauthenticated key, or a key with greater entropy with one with less.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)NVD
Unauthenticated Bluetooth Low Energy OTA firmware upgrade in the Meatmeet Pro WiFi & Bluetooth Meat Thermometer firmware
CVE-2025-32879 is a security vulnerability (CVSS 8.8) that allows an attacker. Risk factors: public PoC available.
Zephyr's Bluetooth Low Energy connection-response handler fails to verify that a connection request was actually initiat
Heap OOB write in Android Bluetooth driver via incorrect bounds check.
A use-after-free in the Android Bluetooth stack (bluetooth_ccc.cc, function BluetoothCccHandlerCallbackImpl) lets an att
Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may
Memory corruption in the Zephyr RTOS LE Audio Broadcast Sink (subsys/bluetooth/audio/bap_broadcast_sink.c) lets an attac
A memory leak combined with a use-after-free in the Linux kernel's Bluetooth HCI connection-setup path can crash the ker
A race condition in the Linux kernel's Bluetooth L2CAP subsystem allows a use-after-free of the hci_conn::l2cap_data poi
Bluetooth authentication bypass in SwitchBot Door Lock Series allows an attacker within BLE range to manipulate the lock
Out-of-bounds read in the Linux kernel Bluetooth subsystem's eir_get_service_data() leaks kernel heap memory into usersp
A stack-based buffer overflow in the vCard parser of the Alpine iLX-F511 in-dash multimedia receiver (build 7.0.0000) le
GitHub PoC
Exploit-DB