CVE-2023-35830: STW (aka Sensor-Technik Wiedemann) TCG-4 Connectivity Module DeploymentPackage_v3.03r0-Impala and DeploymentPa

This month

CRITICAL 9.8REMOTEMITIGATEMITIGATE

CVE-2023-35830 is a critical-severity flaw (CVSS 9.8) affecting tcg-4 firmware, tcg-4lite firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

STW (aka Sensor-Technik Wiedemann) TCG-4 Connectivity Module DeploymentPackage_v3.03r0-Impala and DeploymentPackage_v3.04r2-Jellyfish and TCG-4lite Connectivity Module DeploymentPackage_v3.04r2-Jellyfish allow an attacker to gain full remote access with root privileges without the need for authentication, giving an attacker arbitrary remote code execution over LTE / 4G network via SMS.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-306
Published	2023-06-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: stw-mobile-machines

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

Am I affected?

Timeline

2023-06-29 16:15 UTCPublished CVE record published
2026-06-17 06:05 UTCUpdated Record last modified

stw-mobile-machines tcg-4 firmware MITIGATE

Affected: 3.01r1 · 3.02r0 · 3.03r0 · 3.04r2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.01r1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

stw-mobile-machines tcg-4lite firmware MITIGATE

Affected: 3.04r2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.04r2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2023-35830?

tcg-4 firmware: mitigate or apply the listed mitigation; tcg-4lite firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-35830 being exploited?

CVE-2023-35830 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-2023-35830 affect?

CVE-2023-35830 affects tcg-4 firmware, tcg-4lite firmware. Severity is critical (CVSS 9.8). STW (aka Sensor-Technik Wiedemann) TCG-4 Connectivity Module DeploymentPackage_v3.03r0-Impala and DeploymentPackage_v3.04r2-Jellyfish and TCG-4lite Connectivity Module DeploymentPackage_v3.04r2-Jellyfish allow an attacker to gain full remot

How urgent is CVE-2023-35830?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

References

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