How severe is CVE-2023-35830?

CVE-2023-35830 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-35830 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-35830?

CVE-2023-35830 primarily affects Stw-mobile-machines Tcg-4 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-35830?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-35830 published?

CVE-2023-35830 was published on 2023-06-29 and last updated on 2026-06-17.

CVE-2023-35830

CVE-2023-35830 is a critical-severity vulnerability in Stw-mobile-machines Tcg-4 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Stw-mobile-machines Tcg-4 Firmware
Published: 2023-06-29
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-35830?: 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.
How severe is CVE-2023-35830?: CVE-2023-35830 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-35830 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-35830?: CVE-2023-35830 primarily affects Stw-mobile-machines Tcg-4 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-35830?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-35830 published?: CVE-2023-35830 was published on 2023-06-29 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:stw-mobile-machines:tcg-4_firmware:3.01r1:*:*:*:*:*:*:*
cpe:2.3:o:stw-mobile-machines:tcg-4_firmware:3.02r0:*:*:*:*:*:*:*
cpe:2.3:o:stw-mobile-machines:tcg-4_firmware:3.03r0:*:*:*:*:*:*:*
cpe:2.3:o:stw-mobile-machines:tcg-4_firmware:3.04r2:*:*:*:*:*:*:*
cpe:2.3:o:stw-mobile-machines:tcg-4lite_firmware:3.04r2:*:*:*:*:*:*:*

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