CVE-2023-49252

highpriority · track · 0EPSS 0.006 · 47 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.57% (47th) EPSS

CVSS 7.5 · high

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 < V2.7). The affected application allows IP configuration change without authentication to the device. This could allow an attacker to cause denial of service condition.

remediations

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

A vendor fix is available.

FixedSIMATIC CN 4100siemens_psirt
Update to V2.7 or later version
https://support.industry.siemens.com/cs/ww/en/view/109814144/
FixedSIMATIC CN 4100cisa_csaf_ot
Update to V2.7 or later version
https://support.industry.siemens.com/cs/ww/en/view/109814144/

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · CISA US

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · productcert@siemens.com DEexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20USCWE-20USCWE-20USCWE-404US

affected products (6)

Products and version ranges known to be affected.

SIMATIC CN 4100all versionscisa_csaf_otUS
Siemens SIMATIC CN 4100< V2.7cisa_csaf_otUS
Siemens SIMATIC CN 4100All versions → V2.7enisa_euvdEU
Siemens AG SIMATIC CN 4100≤ 2.7fstec_bduRU
siemens simatic cn 4100 firmware< 2.7nvdUScpe:2.3:o:siemens:simatic_cn_4100_firmware:*:*:*:*:*:*:*:*
Siemens SIMATIC CN 4100< V2.7siemens_psirtDE

advisories (2)

Vendor and ecosystem advisories describing this.

SSA-777015SSA-777015: Multiple Vulnerabilities in SIMATIC CN 4100 before V2.72024-01-09csaf · siemens_psirtDE
SIMATIC CN 4100 is vulnerable to authorization bypass through user-controlled key, use of default credentials and unauthenticated IP address change that could allow an attacker to remotely login as root or cause denial of service condition of the device. Siemens has released a new version for SIMATIC CN 4100 and recommends to update to the latest version.
ICSA-24-011-09Siemens SIMATIC CN 41002024-01-09icsa · cisa_csaf_otUS
SIMATIC CN 4100 is vulnerable to authorization bypass through user-controlled key, use of default credentials and unauthenticated IP address change that could allow an attacker to remotely login as root or cause denial of service condition of the device. Siemens has released a new version for SIMATIC CN 4100 and recommends to update to the latest version.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd siemens_psirt NVD CVE.org MITRE

published 2024-01-09modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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