CVE-2023-6387: A potential buffer overflow exists in the Bluetooth LE HCI CPC sample application in the Gecko SDK which may r

Q: How do I fix CVE-2023-6387?

gecko software development kit: upgrade to 4.4.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-6387 being exploited?

CVE-2023-6387 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-6387 affect?

CVE-2023-6387 affects gecko software development kit. Severity is high (CVSS 7.5). A potential buffer overflow exists in the Bluetooth LE HCI CPC sample application in the Gecko SDK which may result in a denial of service or remote code execution

Routine

HIGH 7.5UPGRADE

CVE-2023-6387 is a high-severity flaw (CVSS 7.5) affecting gecko software development kit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A potential buffer overflow exists in the Bluetooth LE HCI CPC sample application in the Gecko SDK which may result in a denial of service or remote code execution

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-125, CWE-787, CWE-131
Published	2024-02-02
Last modified	2026-06-17

Publisher (CNA): Silicon Labs · Vendor: silabs

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

Am I affected?

Timeline

2024-02-02 16:15 UTCPublished CVE record published
2026-06-17 06:50 UTCUpdated Record last modified

silabs gecko software development kit UPGRADE

Affected: < 4.4.0

Fixed in: 4.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gecko-software-development-kit || rpm -q gecko-software-development-kit || gecko-software-development-kit --version

2. UPGRADE to 4.4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gecko-software-development-kit

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gecko-software-development-kit

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2023-6387?

gecko software development kit: upgrade to 4.4.0. Exact commands for each OS are on this page.

Is CVE-2023-6387 being exploited?

CVE-2023-6387 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-2023-6387 affect?

CVE-2023-6387 affects gecko software development kit. Severity is high (CVSS 7.5). A potential buffer overflow exists in the Bluetooth LE HCI CPC sample application in the Gecko SDK which may result in a denial of service or remote code execution

How urgent is CVE-2023-6387?

Priority 39/100. High severity

Software pages

Bluetooth vulnerabilities

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References

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