CVE-2025-40893

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{}

{"analysis": {"en": {"generated_at": "2026-04-20T16:34:19.451950+00:00", "value": {"mitigation_remediation": ["Apply the vendor-provided upgrade to version 25.5.0 or later for both CMC and Guardian.", "Restrict inbound traffic that can modify asset data to only trusted sources; consider implementing firewall rules or traffic signing to block forged packets.", "Review existing asset entries for embedded HTML and cleanse them if necessary before or after the upgrade."], "summary": {"action": "Upgrade", "impact": "Stored HTML Injection"}, "threat_synthesis": {"affected_systems": "All deployed instances of Nozomi Networks' CMC and Guardian products with versions prior to 25.5.0 are affected. No specific sub\u2011versions are listed, so any release before the 25.5.0 update should be considered vulnerable.", "description_and_impact": "A stored HTML injection flaw was identified in the Asset List component of Nozomi Networks' Guardian and CMC products. Input validation of network packet data fails to escape HTML characters, allowing an attacker to embed markup into asset attributes. When a victim views the affected assets in the Asset List or equivalent interfaces, the injected tags are rendered in the browser, enabling phishing or open\u2011redirect attacks. The description notes that full cross\u2011site scripting exploitation and direct information disclosure are mitigated by existing input checks and a Content Security Policy, but the ability to display arbitrary HTML remains a concern.", "risk_and_exploitability": "The CVSS score of 5.3 indicates a moderate severity. An EPSS score of less than 1% suggests a very low probability of exploitation at this time, and the vulnerability is not included in CISA's KEV catalog. The likely attack vector involves an unauthenticated attacker sending crafted network packets to the device, inferred from the description. The attacker can inject HTML into asset attributes but cannot achieve full XSS or direct data exfiltration due to defensive input validation and CSP settings. Nonetheless, the rendered malicious content in the Asset List can be used for phishing or to drive users to malicious destinations when they interact with the UI."}}}}, "created": "2026-04-20T16:45:11.949641+00:00", "updated": "2026-04-20T16:45:11.949653+00:00", "vendors": []}