What is CVE-2019-17519?

CVE-2019-17519 is a high-severity vulnerability in Nxp Kw31z, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2020-02-12.

How severe is CVE-2019-17519?

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

Is CVE-2019-17519 known to be exploited?

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

Buffer overflow in Nxp Kw31z

CVE-2019-17519

The Bluetooth Low Energy implementation on NXP SDK through 2.2.1 for KW41Z devices does not properly restrict the Link Layer payload length, allowing attackers in radio range to cause a buffer overflow via a crafted packet.

Vulnerability class: Buffer Overflow

Published 2020-02-12 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.012 (66.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

asset-group.github.io/disclosures/sweyntooth/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-17519?: CVE-2019-17519 is a high-severity vulnerability in Nxp Kw31z, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2020-02-12.
How severe is CVE-2019-17519?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2019-17519 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.