How severe is CVE-2019-19196?

CVE-2019-19196 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-19196 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-19196?

CVE-2019-19196 primarily affects Telink-semi Tlsr8258 Ble Sdk. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-19196?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-19196 published?

CVE-2019-19196 was published on 2020-02-12 and last updated on 2026-06-17.

CVE-2019-19196

CVE-2019-19196 is a medium-severity vulnerability in Telink-semi Tlsr8258 Ble Sdk with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Telink-semi Tlsr8258 Ble Sdk
Published: 2020-02-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-19196?: 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.
How severe is CVE-2019-19196?: CVE-2019-19196 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-19196 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-19196?: CVE-2019-19196 primarily affects Telink-semi Tlsr8258 Ble Sdk. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-19196?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-19196 published?: CVE-2019-19196 was published on 2020-02-12 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:telink-semi:tlsr8258_ble_sdk:*:*:*:*:*:*:*:*
cpe:2.3:a:telink-semi:tlsr8269_ble_sdk:*:*:*:*:*:*:*:*
cpe:2.3:a:telink-semi:tlsr8253_ble_sdk:*:*:*:*:*:*:*:*
cpe:2.3:a:telink-semi:tlsr8251_ble_sdk:*:*:*:*:*:*:*:*
cpe:2.3:a:telink-semi:tlsr8232_ble_sdk:*:*:*:*:*:*:*:*

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