Victim-context script execution via unvalidated report input
Published Dec 18, 2025 · Updated Dec 18, 2025
Stored XSS in Reports in Nozomi Networks Guardian and CMC before 25.5.0 allows remote authenticated users to execute script. The report editor or template importer accepts an input parameter containing JavaScript without proper validation and stores it for execution when a report is viewed or imported. Report privileges permit direct creation; otherwise, a victim must import a malicious template, after which the script acts in that victim's browser context to alter application data, interrupt the application, or access limited sensitive information.
Summary
What happened
Stored XSS in Reports in Nozomi Networks Guardian and CMC before 25.5.0 allows remote authenticated users to execute script. The report editor or template importer accepts an input parameter containing JavaScript without proper validation and stores it for execution when a report is viewed or imported. Report privileges permit direct creation; otherwise, a victim must import a malicious template, after which the script acts in that victim's browser context to alter application data, interrupt the application, or access limited sensitive information.
The record
- CVE
- CVE-2025-40892
- Published
- Dec 18, 2025
- Updated
- Dec 18, 2025
- Vendor
- Nozomi Networks
- Product
- Guardian
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 18, 2025CVE publishedPublication date reported by the CVE source.
- Dec 18, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <25.5.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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