CVE-2019-19196

MEDIUM
6.5
CVSS Score
Published: February 12, 2020 at 02:23 PM UTC
Updated: June 17, 2026 at 02:26 AM UTC
10 products affected across 1 vendorTLSR8232 Ble SDKTLSR8258 Ble SDKTLSR8251 Ble SDK

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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%

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 accepts a pairing request with a key size greater than 16 bytes, allowing an attacker in radio range to cause a buffer overflow and denial of service (crash) via crafted packets.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.3.0
telink-semi-tlsr8232 (same device)
v ≤ 3.4.0
telink-semi-tlsr8251 (same device)
v ≤ 3.4.0
telink-semi-tlsr8253 (same device)
v ≤ 3.4.0
telink-semi-tlsr8258 (same device)
v ≤ 3.3
telink-semi-tlsr8269 (same device)
All versions
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCVendor Advisory
http://www.telink-semi.com/ble
x_refsource_MISCExploitThird Party Advisory
https://asset-group.github.io/disclosures/sweyntooth/

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-120

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