CVE-2023-29131

criticalpriority · track · 40OT risk · elevatedEPSS 0.004 · 36 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.42% (36th) EPSS
CVSS 10 · critical
Is it mine?
6 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

10.0
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.4–10

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 6
v3.17.4highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:Csecondary · CISA US
v3.17.4highAV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Lsecondary · FSTEC (BDU) RU
v3.17.4highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:Csecondary · ENISA EU
v3.17.4highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Lsecondary · productcert@siemens.com DEexploitability 3.1 · impact 3.7
v3.17.4highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-276USprimaryCWE-276USCWE-276USCWE-276US
05

affected products (6)

Products and version ranges known to be affected.

06

advisories (2)

Vendor and ecosystem advisories describing this.

  • SSA-313488SSA-313488: Multiple Vulnerabilities in SIMATIC CN 4100 before V2.52023-07-11csaf · siemens_psirtDE

    SIMATIC CN 4100 is vulnerable to improper access control and insecure default configurations that could allow an attacker to gain privilege escalation, and bypass network isolation. Siemens has released an update for SIMATIC CN 4100 and recommends to update to the latest version.

  • ICSA-23-194-03Siemens SIMATIC CN 41002023-07-11icsa · cisa_csaf_otUS

    SIMATIC CN 4100 is vulnerable to improper access control and insecure default configurations that could allow an attacker to gain privilege escalation, and bypass network isolation. Siemens has released an update for SIMATIC CN 4100 and recommends to update to the latest version.

07

also known as (6)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otnvdsiemens_psirtNVDCVE.orgMITRE
published 2023-07-11modified 2026-10-24
10

references (4)

External citations — patches, advisories, analysis.

scry

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