CVE-2023-5253

highpriority · track · 30OT risk · elevatedEPSS 0.005 · 39 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.45% (39th) EPSS

CVSS 7.5 · high

Is it mine?

13 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

A missing authentication check in the WebSocket channel used for the Check Point IoT integration in Nozomi Networks Guardian and CMC, may allow an unauthenticated attacker to obtain assets data without authentication. Malicious unauthenticated users with knowledge on the underlying system may be able to extract limited asset information.

remediations

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

A vendor fix is available.

FixedCMCnozomi_psirt
Upgrade to v23.3.0 or later.
FixedGuardiannozomi_psirt
Upgrade to v23.3.0 or later.
FixedRUGGEDCOM APE1808siemens_psirt
Upgrade Nozomi Guardian / CMC to V23.4.1. Contact customer support to receive patch and update information.
FixedRUGGEDCOM APE1808cisa_csaf_ot
Upgrade Nozomi Guardian / CMC to V23.4.1. Contact customer support to receive patch and update information.
MitigationCMCnozomi_psirt
Use internal firewall features to limit access to the web management interface.
MitigationGuardiannozomi_psirt
Use internal firewall features to limit access to the web management interface.
WorkaroundRUGGEDCOM APE1808siemens_psirt
Use internal firewall features to limit access to the web management interface
WorkaroundRUGGEDCOM APE1808cisa_csaf_ot
Use internal firewall features to limit access to the web management interface

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 · low–high · 1.7–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:Csecondary · CISA US

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

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · Nozomi Networks PSIRT

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · prodsec@nozominetworks.comexploitability 3.9 · impact 1.4

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:Nsecondary · ENISA EU

v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · prodsec@nozominetworks.com

v4.01.7lowCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-306USprimaryCWE-200USCWE-200USCWE-306USCWE-306US

affected products (13)

Products and version ranges known to be affected.

RUGGEDCOM APE1808all versionscisa_csaf_otUS
Siemens RUGGEDCOM APE1808< with_Nozomi_Guardian_/_CMC_23.3.0cisa_csaf_otUS
Nozomi Networks CMC0 → 23.3.0enisa_euvdEU
Nozomi Networks Guardian0 → 23.3.0enisa_euvdEU
Nozomi Networks Inc. Nozomi Central Management Console (CMC)≤ 23.3.0fstec_bduRU
Nozomi Networks Inc. Nozomi Guardian≤ 23.3.0fstec_bduRU
Nozomi Networks CMC≤ vers:gem/<23.3.0nozomi_psirtUS
Nozomi Networks CMCall versionsfixednozomi_psirtUS
Nozomi Networks Guardian≤ vers:gem/<23.3.0nozomi_psirtUS
Nozomi Networks Guardianall versionsfixednozomi_psirtUS
nozominetworks cmc< 23.3.0nvdUScpe:2.3:a:nozominetworks:cmc:*:*:*:*:*:*:*:*
nozominetworks guardian< 23.3.0nvdUScpe:2.3:a:nozominetworks:guardian:*:*:*:*:*:*:*:*
Siemens RUGGEDCOM APE1808≤ All versions with Nozomi Guardian / CMC before 23.3.0siemens_psirtDE

advisories (3)

Vendor and ecosystem advisories describing this.

NN-2023:12-01Check Point IoT integration: WebSocket returns assets data without authentication in Guardian/CMC before 23.3.02024-01-15csaf · nozomi_psirtUS
SSA-665034SSA-665034: Vulnerability in Nozomi Guardian/CMC before 23.3.0 on RUGGEDCOM APE1808 devices2024-02-13csaf · siemens_psirtDE
Nozomi Networks has published information on vulnerabilities in Nozomi Guardian/CMC before 23.3.0. This advisory lists the related Siemens Industrial products affected by these vulnerabilities. Siemens has released a new version for RUGGEDCOM APE1808 and recommends to update to the latest version. Customers are advised to consult and implement the workarounds provided in Nozomi Network's upstream security notifications.
ICSA-24-046-08Siemens RUGGEDCOM APE18082024-02-13icsa · cisa_csaf_otUS
Nozomi Networks has published information on vulnerabilities in Nozomi Guardian/CMC before 23.3.0. This advisory lists the related Siemens Industrial products affected by these vulnerabilities. Siemens has released a new version for RUGGEDCOM APE1808 and recommends to update to the latest version. Customers are advised to consult and implement the workarounds provided in Nozomi Network's upstream security notifications.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nozomi_psirt nvd siemens_psirt NVD CVE.org MITRE

published 2024-01-15modified 2026-06-17

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references (4)

External citations — patches, advisories, analysis.

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