CVE-2025-40890
highpriority · track · 0EPSS 0.002 · 11 %ileDEEUUSEPSS · scored 2026-10-27
A Stored Cross-Site Scripting vulnerability was discovered in the Dashboards functionality due to improper validation of an input parameter. An authenticated low-privilege user can craft a malicious dashboard containing a JavaScript payload and share it with victim users, or a victim can be socially engineered to import a malicious dashboard template. When the victim views or imports the dashboard, the XSS executes in their browser context, allowing the attacker to perform unauthorized actions as the victim, such as modify application data, disrupt application availability, and access limited sensitive information.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedCMCnozomi_psirt
Upgrade to v25.4.0 or later.
- FixedGuardiannozomi_psirt
Upgrade to v25.4.0 or later.
- FixedRUGGEDCOM APE1808siemens_psirt
Upgrade Nozomi Guardian / CMC to V25.4.0. Using Web GUI might have errors and it is recommended to use the CLI for the upgrade. Contact customer support to receive patch and update information
- FixedRUGGEDCOM APE1808cisa_csaf_ot
Upgrade Nozomi Guardian / CMC to V25.4.0. Using Web GUI might have errors and it is recommended to use the CLI for the upgrade. Contact customer support to receive patch and update information
- MitigationCMCnozomi_psirt
Use internal firewall features to limit access to the web management interface. Review all accounts with access to it and delete unnecessary ones.
- MitigationGuardiannozomi_psirt
Use internal firewall features to limit access to the web management interface. Review all accounts with access to it and delete unnecessary ones.
- MitigationRUGGEDCOM APE1808siemens_psirt
Use internal firewall features to limit access to the web management interface. Review all accounts with access to it and delete unnecessary ones
- MitigationRUGGEDCOM APE1808cisa_csaf_ot
Use internal firewall features to limit access to the web management interface. Review all accounts with access to it and delete unnecessary ones
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 2–7.9
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (9)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- NN-2025:11-01Stored Cross-Site Scripting (XSS) in Dashboards in Guardian/CMC before 25.4.02025-11-25csaf · nozomi_psirtUS
- SSA-978177SSA-978177: Vulnerability in Nozomi Guardian/CMC Before 25.4.0 on RUGGEDCOM APE1808 Devices2025-08-12csaf · siemens_psirtDE
Nozomi Networks has published information on vulnerabilities in Nozomi Guardian/CMC. 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.
- ICSA-25-226-09Siemens RUGGEDCOM APE18082025-08-12icsa · cisa_csaf_otUS
Nozomi Networks has published information on vulnerabilities in Nozomi Guardian/CMC. 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.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (3)
External citations — patches, advisories, analysis.
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