CVE-2019-19194

Public Exploit

Description

The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation on Telink Semiconductor BLE SDK versions before November 2019 for TLSR8x5x through 3.4.0, TLSR823x through 1.3.0, and TLSR826x through 3.3 devices installs a zero long term key (LTK) if an out-of-order link-layer encryption request is received during Secure Connections pairing. An attacker in radio range can have arbitrary read/write access to protected GATT service data, cause a device crash, or possibly control a device's function by establishing an encrypted session with the zero LTK.

8.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.93% Top 30%

Vendor Advisory telink-semi.com

Affected: n/a n/a

References

Link	Tags
http://www.telink-semi.com/ble	vendor advisory
https://asset-group.github.io/disclosures/sweyntooth/	third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2019-19194?: CVE-2019-19194 has been scored as a high severity vulnerability.
How to fix CVE-2019-19194?: To fix CVE-2019-19194, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-19194 being actively exploited in the wild?: It is possible that CVE-2019-19194 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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