HOMEVULNERABILITIESCVE-2019-16336
MEDIUM

CVE-2019-16336

CWE-120Published: February 12, 2020· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2019-16336 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

cypress2 product(s)
cyble-416045cybl11573
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://asset-group.github.io/disclosures/sweyntooth/
ADVISORYhttps://community.cypress.com/thread/48573
ADVISORYhttps://community.cypress.com/thread/53680
ADVISORYhttps://www.youtube.com/watch?v=Iw8sIBLWE_w
ADVISORYhttps://asset-group.github.io/disclosures/sweyntooth/
ADVISORYhttps://community.cypress.com/thread/48573
ADVISORYhttps://community.cypress.com/thread/53680
ADVISORYhttps://www.youtube.com/watch?v=Iw8sIBLWE_w

All References (8)

→
https://asset-group.github.io/disclosures/sweyntooth/Exploit · Third Party Advisory
→
https://community.cypress.com/thread/48573Vendor Advisory
→
https://community.cypress.com/thread/53680Vendor Advisory
→
https://www.youtube.com/watch?v=Iw8sIBLWE_wExploit · Third Party Advisory
→
https://asset-group.github.io/disclosures/sweyntooth/Exploit · Third Party Advisory
→
https://community.cypress.com/thread/48573Vendor Advisory
→
https://community.cypress.com/thread/53680Vendor Advisory
→
https://www.youtube.com/watch?v=Iw8sIBLWE_wExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2019-16336
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 12, 2020

Related CVEs (CWE-120)

CVE-2008-3496
10.0
CVE-1999-0046
10.0
CVE-1999-1237
10.0
CVE-2011-4862
10.0
CVE-2002-1337
10.0
CVE-2017-16740
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-16336 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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