CVE-2019-13916: An issue was discovered in Cypress (formerly Broadcom) WICED Studio 6.2 CYW20735B1 and CYW20819A1

This month

HIGH 8.8DOWNGRADE

CVE-2019-13916 is a high-severity flaw (CVSS 8.8) affecting wiced studio. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Cypress (formerly Broadcom) WICED Studio 6.2 CYW20735B1 and CYW20819A1. As a Bluetooth Low Energy (BLE) packet is received, it is copied into a Heap (ThreadX Block) buffer. The buffer allocated in dhmulp_getRxBuffer is four bytes too small to hold the maximum of 255 bytes plus headers. It is possible to corrupt a pointer in the linked list holding the free buffers of the g_mm_BLEDeviceToHostPool Block pool. This pointer

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-787
Published	2020-04-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cypress

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-04-13 17:15 UTCPublished CVE record published
2026-06-17 02:17 UTCUpdated Record last modified

cypress wiced studio DOWNGRADE

Affected: 6.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.2

1. Check installed version

apt-cache policy wiced-studio || rpm -q wiced-studio || wiced-studio --version

2. No fixed release: DOWNGRADE to a release before 6.2 (Debian / Ubuntu)

apt-cache madison wiced-studio sudo apt install wiced-studio=<VERSION_BEFORE_6.2> sudo apt-mark hold wiced-studio

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list wiced-studio sudo dnf downgrade wiced-studio-<VERSION_BEFORE_6.2> sudo dnf versionlock add wiced-studio

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-13916?

wiced studio: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-13916 being exploited?

CVE-2019-13916 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-13916 affect?

CVE-2019-13916 affects wiced studio. Severity is high (CVSS 8.8). An issue was discovered in Cypress (formerly Broadcom) WICED Studio 6.2 CYW20735B1 and CYW20819A1. As a Bluetooth Low Energy (BLE) packet is received, it is copied into a Heap (ThreadX Block) buffer. The buffer allocated in dhmulp_getRxBuff

How urgent is CVE-2019-13916?

Priority 53/100. High severity; Public exploit reference

Software pages

Bluetooth vulnerabilities

References

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