CVE-2019-16336 json
The Bluetooth Low Energy implementation in Cypress PSoC 4 BLE component 3.61 and earlier processes data channel frames with a payload lengt…
published 2020-02-12 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7114
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
The Bluetooth Low Energy implementation in Cypress PSoC 4 BLE component 3.61 and earlier processes data channel frames with a payload length larger than the configured link layer maximum RX payload size, which allows attackers (in radio range) to cause a denial of service (crash) via a crafted BLE Link Layer frame.
Exploit prediction
1.49% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- asset-group.github.io https://asset-group.github.io/disclosures/sweyntooth/ referenced PoC, tagged "exploit" by a source, unverified
- youtube.com https://www.youtube.com/watch?v=Iw8sIBLWE_w referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 3.3 | AV:A/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
asset-group.github.io
/disclosures/sweyntooth/
exploit, third-party-advisory
-
youtube.com
/watch?v=Iw8sIBLWE_w
exploit, third-party-advisory
-
community.cypress.com
/thread/48573
vendor-advisory
-
community.cypress.com
/thread/53680
vendor-advisory
Sources
- CVE List CVE-2019-16336
- NVD CVE-2019-16336
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