Cyber Resilience

CVE-2024-32741

Exposed Creds in Siemens Simatic Cn 4100 Firmware ≤ 3.0

Exposed Creds
Published
14 May 2024
Modified
26 August 2025
Patch / advisory
View advisory
CVSS Score v3.1 10.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0063 47th percentile
Risk Priority 75 floored blend · peak EPSS

Summary

CVE-2024-32741 is a critical-severity Use of Hard-coded Password (CWE-259) vulnerability in Siemens Simatic Cn 4100 Firmware. Its CVSS base score is 10.0 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Valid Accounts (T1078); ranked at the 47th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to IA-5 (Authenticator Management) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A07:2025 Authentication Failures

EU & UK References

Vulnerability Data

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains hard coded password which is used for the privileged system user `root` and for the boot loader `GRUB` by default . An attacker…

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who manages to crack the password hash gains root access to the device.

CWE(s)
CWE-259

Related Threats

MITRE ATT&CK Enterprise Techniques

T1078 Valid Accounts Stealth
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
T1078.001 Default Accounts Stealth
Adversaries may obtain and abuse credentials of a default account as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
T1552 Unsecured Credentials Credential Access
Adversaries may search compromised systems to find and obtain insecurely stored credentials.
attack.mitre.org →
T1552.001 Credentials In Files Credential Access
Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.
attack.mitre.org →
T1133 External Remote Services Persistence
Adversaries may leverage external-facing remote services to initially access and/or persist within a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-32740Same product: Siemens Simatic Cn 4100
CVE-2025-40938Same product: Siemens Simatic Cn 4100
CVE-2023-49621Same product: Siemens Simatic Cn 4100
CVE-2026-22924Same product: Siemens Simatic Cn 4100
CVE-2025-40941Same product: Siemens Simatic Cn 4100
CVE-2025-40940Same product: Siemens Simatic Cn 4100
CVE-2025-40939Same product: Siemens Simatic Cn 4100
CVE-2023-49251Same product: Siemens Simatic Cn 4100
CVE-2023-29103Same vendor: Siemens
CVE-2024-32742Same product: Siemens Simatic Cn 4100

Affected Assets

siemens
simatic cn 4100 firmware
≤ 3.0

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

IA-5 Authenticator Management partial match

Authenticator management requires secure distribution, rotation, and verification of credentials, directly stopping hard-coded passwords from being introduced or used.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prohibit embedding credentials in source code or binaries.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.17 Authentication information none match
prevents

Requiring users to change temporary or default passwords at first use stops the continued existence of hard-coded or guessable passwords that are shipped with the product.

References