What is CVE-2019-19194?

CVE-2019-19194 is a high-severity vulnerability in Telink-Semi Tlsr8232. CVSS score: 8.8/10. Published 2020-02-12.

How severe is CVE-2019-19194?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2019-19194 known to be exploited?

6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Telink-Semi Tlsr8232

CVE-2019-19194

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.

EPSS: 0.010 (59.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-19194?: CVE-2019-19194 is a high-severity vulnerability in Telink-Semi Tlsr8232. CVSS score: 8.8/10. Published 2020-02-12.
How severe is CVE-2019-19194?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2019-19194 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.