CVE-2023-35830Network attack vector

Unauthenticated root code execution via SMS eval injection

Published Jun 29, 2023 · Updated Nov 27, 2024

Eval injection in the stw_RecvSMS utility on STW TCG-4 and TCG-4lite modules allows remote attackers to execute arbitrary code as root via crafted SMS. The utility evaluates untrusted SMS content without neutralizing directives; on TCG-4, SMS_WAKEUP=ON can invoke it while ignition is off. No authentication is required, and affected deployment packages are 3.01r1-Gecko, 3.02r0-Hedgehog, 3.03r0-Impala, and 3.04r2-Jellyfish for TCG-4 and 3.04r2-Jellyfish for TCG-4lite.

CVSS severity9.8
Critical
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Eval injection in the stw_RecvSMS utility on STW TCG-4 and TCG-4lite modules allows remote attackers to execute arbitrary code as root via crafted SMS. The utility evaluates untrusted SMS content without neutralizing directives; on TCG-4, SMS_WAKEUP=ON can invoke it while ignition is off. No authentication is required, and affected deployment packages are 3.01r1-Gecko, 3.02r0-Hedgehog, 3.03r0-Impala, and 3.04r2-Jellyfish for TCG-4 and 3.04r2-Jellyfish for TCG-4lite.

The record

CVE
CVE-2023-35830
Published
Jun 29, 2023
Updated
Nov 27, 2024
Vendor
Sensor-Technik Wiedemann GmbH
Product
TCG-4lite
Classifications
CWE-95, CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v3.04r2-Jellyfish

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sensor-Technik Wiedemann GmbH · TCG-4liteversion=v3.04r2-Jellyfish
Sensor-Technik Wiedemann GmbH · TCG-4version=v3.03r0-Impala; version=v3.04r2-Jellyfish

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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