CVE-2023-29131 json
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.5).
published 2023-07-11 3 y ago modified 2026-10-24 16 d ago also EUVD-2023-32734
- cvss
- 7.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.5). Affected device consists of an incorrect default value in the SSH configuration. This could allow an attacker to bypass network isolation.
Patch / fix
- siemens simatic_cn_4100_firmware 2.5
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-23-194-03 updated cvss 7.4
Siemens SIMATIC CN 4100
-
Siemens SIMATIC CN 4100 <V2.5affected: fixed in V2.5 support.industry.siemens.com
Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C |
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L |
| NVD | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
- Siemens SIMATIC CN 4100
Classification
- Weakness
-
- CWE-276 Incorrect Default Permissions
References
-
cert-portal.siemens.com
/productcert/pdf/ssa-313488.pdf
patch, vendor-advisory
Sources
- CVE List CVE-2023-29131
- NVD CVE-2023-29131
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