Nozomi Guardian/CMC up to 25.4.x Asset List cross site scripting

Summaryinfo

A vulnerability was found in Nozomi Guardian and CMC up to 25.4.x and classified as problematic. The affected element is an unknown function of the component Asset List. Such manipulation leads to cross site scripting. This vulnerability is documented as CVE-2025-40893. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Nozomi Guardian and CMC up to 25.4.x. Affected by this issue is an unknown code of the component Asset List. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. Impacted is integrity. CVE summarizes:

A Stored HTML Injection vulnerability was discovered in the Asset List functionality due to improper validation of network traffic data. An unauthenticated attacker can send specially crafted network packets to inject HTML tags into asset attributes. When a victim views the affected assets in the Asset List (and similar functions), the injected HTML renders in their browser, enabling phishing and possibly open redirect attacks. Full XSS exploitation and direct information disclosure are prevented by the existing input validation and Content Security Policy configuration.

The advisory is shared for download at security.nozominetworks.com. This vulnerability is handled as CVE-2025-40893 since 04/16/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 25.5.0 eliminates this vulnerability.

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Productinfo

Vendor

• Nozomi

Name

• CMC
• Guardian

Version

• 25.0
• 25.1
• 25.2
• 25.3
• 25.4

CPE 2.3info

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CPE 2.2info

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