CVE-2025-69969 Overview
A critical authentication bypass vulnerability exists in the Bluetooth Low Energy (BLE) communication protocol of SRK Powertech Pvt Ltd Pebble Prism Ultra v2.9.2. The lack of authentication and authorization mechanisms allows attackers within BLE proximity to reverse engineer the protocol and execute arbitrary commands on the device without establishing a legitimate connection. This vulnerability extends beyond command execution to include cleartext data interception and unauthenticated firmware hijacking via Over-The-Air (OTA) update services.
Critical Impact
Attackers within Bluetooth range can execute arbitrary commands, intercept cleartext data, and hijack device firmware without any authentication, potentially compromising device integrity and user privacy.
Affected Products
- SRK Powertech Pvt Ltd Pebble Prism Ultra v2.9.2
- BLE-enabled devices using the affected communication protocol
- OTA firmware update services on affected devices
Discovery Timeline
- 2026-03-04 - CVE CVE-2025-69969 published to NVD
- 2026-03-04 - Last updated in NVD database
Technical Details for CVE-2025-69969
Vulnerability Analysis
This vulnerability is classified under CWE-311 (Missing Encryption of Sensitive Data), which describes a failure to encrypt sensitive information before storage or transmission. The Pebble Prism Ultra smartwatch implements BLE communication without proper authentication or authorization controls, creating a significant attack surface for adversaries within wireless proximity.
The attack requires adjacent network access, meaning attackers must be within BLE range (typically 10-100 meters depending on environment and device capabilities). Once within range, no user interaction or prior privileges are required to exploit this vulnerability. The scope is changed, meaning successful exploitation can affect resources beyond the vulnerable component itself, potentially compromising the confidentiality, integrity, and availability of connected systems.
Root Cause
The root cause lies in the complete absence of authentication and authorization mechanisms in the BLE communication protocol implementation. The device accepts and processes commands from any BLE-capable device within range without verifying the identity or authorization level of the requesting party. Additionally, sensitive data transmitted over BLE is sent in cleartext without encryption, violating basic security principles for wireless communications.
The OTA firmware update service compounds this issue by accepting firmware updates without proper signature verification or authentication, enabling malicious actors to push unauthorized firmware to vulnerable devices.
Attack Vector
The attack vector is adjacent network access via Bluetooth Low Energy. An attacker positioned within BLE proximity of a vulnerable Pebble Prism Ultra device can:
- Reverse engineer the BLE protocol - Analyze BLE advertising packets and GATT services to understand the command structure
- Execute arbitrary commands - Send crafted BLE packets to trigger device functions without pairing or authentication
- Intercept cleartext data - Passively monitor BLE communications to capture sensitive user data transmitted without encryption
- Hijack firmware updates - Exploit the unauthenticated OTA service to push malicious firmware to the device
The attack can be executed using commodity BLE hardware such as nRF52 development boards or Ubertooth devices, combined with BLE analysis tools. For additional technical details on this vulnerability class, see the BLEached Security Advisory.
Detection Methods for CVE-2025-69969
Indicators of Compromise
- Unexpected BLE connection attempts or pairing requests from unknown devices
- Device behavior changes such as unauthorized setting modifications or unexpected reboots
- Firmware version discrepancies indicating potential malicious firmware installation
- Unusual battery drain patterns that may indicate active exploitation
Detection Strategies
- Monitor BLE traffic using dedicated BLE sniffers to identify anomalous command patterns
- Implement firmware integrity verification to detect unauthorized modifications
- Deploy endpoint detection solutions capable of monitoring IoT device communications
- Establish baseline BLE communication patterns to identify deviations indicative of attack activity
Monitoring Recommendations
- Enable BLE connection logging where available on connected mobile applications
- Regularly audit device firmware versions against known-good vendor releases
- Implement network segmentation to isolate IoT devices from critical infrastructure
- Consider deploying SentinelOne Singularity for comprehensive endpoint visibility across IoT environments
How to Mitigate CVE-2025-69969
Immediate Actions Required
- Limit use of the affected Pebble Prism Ultra device until a security patch is available
- Disable BLE connectivity when not actively required for device operation
- Avoid using the device in public or high-risk environments where attackers could be within BLE range
- Monitor vendor communications for security updates addressing this vulnerability
Patch Information
No official patch information is currently available from SRK Powertech Pvt Ltd. Users should monitor the vendor's official channels and the BLEached Security GitHub repository for updates regarding security fixes.
Contact SRK Powertech Pvt Ltd directly to inquire about the availability of firmware updates that address this vulnerability. Consider device replacement if the vendor does not provide a timely security update.
Workarounds
- Disable BLE functionality on the device when not in active use to reduce the attack surface
- Use the device only in trusted, private environments where the risk of nearby attackers is minimal
- Avoid storing sensitive information on or transmitting through the affected device
- Consider implementing physical security controls to limit attacker proximity to affected devices
# BLE monitoring example using btmon (Linux)
# Monitor BLE traffic for suspicious activity
sudo btmon -w ble_capture.btsnoop
# List BLE devices in range to identify potential rogue devices
sudo hcitool lescan
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
