CVE-2024-32740
published 2024-05-14CVE-2024-32740: A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains undocumented users and credentials. An attacker…
PriorityP260critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.70%
49.1th percentile
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains undocumented users and credentials. An attacker could misuse the credentials to compromise the device
locally or over the network.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| siemens | simatic_cn_4100 | < V3.0 | V3.0 |
| siemens | simatic_cn_4100_firmware | < 3.0 | 3.0 |
Detection & IOCsextracted from sources · hover to see the quote
- →CVE-2024-32740 involves undocumented (hidden) user accounts with hardcoded credentials on SIMATIC CN 4100 devices (all versions < V3.0). Detect by auditing active user accounts on the device for any accounts not provisioned by the administrator. ↗
- →Exploitation can occur remotely with no authentication and no user interaction (CVSS AV:N/AC:L/PR:N/UI:N). Monitor for unexpected remote login attempts or authenticated sessions on SIMATIC CN 4100 devices, especially from external network sources. ↗
- →Scope detection to SIMATIC CN 4100 devices running firmware versions prior to V3.0. Inventory and fingerprint these devices on the network as a priority for patching and monitoring. ↗
- ·The specific undocumented usernames and credential values are not publicly disclosed in the available sources. Detection of exploitation relies on behavioral/anomaly-based monitoring rather than credential-specific signatures. ↗
- ·This CVE is one of three related vulnerabilities (CVE-2024-32740, CVE-2024-32741, CVE-2024-32742) affecting the same product. CVE-2024-32741 additionally covers a hardcoded root and GRUB bootloader password, and CVE-2024-32742 covers unrestricted USB boot access — all fixed in V3.0. ↗
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CISA ICS
Siemens SIMATIC CN 4100 Before V3.0
cisa_ics·2024-05-16·CVSS 9.8
[CRITICAL] Siemens SIMATIC CN 4100 Before V3.0
ICS Advisory
##
Siemens SIMATIC CN 4100 Before V3.0
Release DateMay 16, 2024
Alert CodeICSA-24-137-06
As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
View CSAF
## 1. EXECUTIVE SUMMARY
- CVSS v4 10.0
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SIMATIC CN 4100
- Vulnerabilities: Use of Hard-coded Credentials, Use of Hard-coded Password, Missing Immutable Root of Trust in Hardware
## 2. RISK EVALUATION
Successful exploitation of these vulnerabilities cou
GHSA
GHSA-9j9j-j88x-9vc6: A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3
ghsa_unreviewed·2024-05-14
CVE-2024-32740 [CRITICAL] CWE-798 GHSA-9j9j-j88x-9vc6: A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains undocumented users and credentials. An attacker could misuse the credentials to compromise the device
locally or over the network.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2024-05-14
Published