CVE-2023-5138: Glitch detection is not enabled by default for the CortexM33 core in Silicon Labs secure vault high parts EFx3

Routine

MEDIUM 6.8UPGRADE

CVE-2023-5138 is a medium-severity flaw (CVSS 6.8) affecting gecko software development kit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Glitch detection is not enabled by default for the CortexM33 core in Silicon Labs secure vault high parts EFx32xG2xB, except EFR32xG21B.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-1319, CWE-909
Published	2024-01-03
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

2024-01-03 23:15 UTCPublished CVE record published
2026-06-17 06:47 UTCUpdated Record last modified

silabs gecko software development kit UPGRADE

Affected: >= 1.0.0 and < 4.4.0

Fixed in: 4.4.0

Safe to downgrade to: a release before 1.0.0

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.

3. If no update is available yet, DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison gecko-software-development-kit sudo apt install gecko-software-development-kit=<VERSION_BEFORE_1.0.0> sudo apt-mark hold gecko-software-development-kit

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list gecko-software-development-kit sudo dnf downgrade gecko-software-development-kit-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add gecko-software-development-kit

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-2023-5138?

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

Is CVE-2023-5138 being exploited?

CVE-2023-5138 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-2023-5138 affect?

CVE-2023-5138 affects gecko software development kit. Severity is medium (CVSS 6.8). Glitch detection is not enabled by default for the CortexM33 core in Silicon Labs secure vault high parts EFx32xG2xB, except EFR32xG21B.

How urgent is CVE-2023-5138?

Priority 29/100. No elevated risk signals yet.

Software pages

HashiCorp Vault vulnerabilities

Related CVEs

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CVE-2023-4280 CRITICAL 9.3 UPGRADE An unvalidated input in Silicon Labs TrustZone implementation in v4.3.x and earlier of the Gecko SDK allows an
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References

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