VDB-264179 · CVE-2024-32742 · ssa-273900

Siemens SIMATIC CN 4100 up to 2.x USB Port missing immutable root of trust in hardware

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.9	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Siemens SIMATIC CN 4100 up to 2.x. This vulnerability affects unknown code of the component USB Port Handler. The manipulation leads to missing immutable root of trust in hardware. This vulnerability is traded as CVE-2024-32742. It is possible to launch the attack on the physical device. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Siemens SIMATIC CN 4100 up to 2.x. This issue affects some unknown processing of the component USB Port Handler. The manipulation with an unknown input leads to a missing immutable root of trust in hardware vulnerability. Using CWE to declare the problem leads to CWE-1326. A missing immutable root of trust in the hardware results in the ability to bypass secure boot or execute untrusted or adversarial boot code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains an unrestricted USB port. An attacker with local access to the device could potentially misuse the port for booting another operating system and gain complete read/write access to the filesystem.

It is possible to read the advisory at cert-portal.siemens.com. The identification of this vulnerability is CVE-2024-32742 since 04/17/2024. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 3.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

SCADA Software

Vendor

Siemens

Name

SIMATIC CN 4100

Version

License

commercial

Website

Vendor: https://www.siemens.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.6
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.6
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing immutable root of trust in hardware
CWE: CWE-1326
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: SIMATIC CN 4100 3.0

Timelineinfo

04/17/2024 🔍
05/14/2024 +27 days 🔍
05/14/2024 +0 days 🔍
08/20/2025 +463 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-273900
Status: Confirmed

CVE: CVE-2024-32742 (🔍)
GCVE (CVE): GCVE-0-2024-32742
GCVE (VulDB): GCVE-100-264179

Entryinfo

Created: 05/14/2024 14:08
Updated: 08/20/2025 22:35
Changes: 05/14/2024 14:08 (64), 08/20/2025 22:35 (1)
Complete: 🔍
Cache ID: 216::103