{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-2566", "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "state": "PUBLISHED", "assignerShortName": "icscert", "dateReserved": "2025-03-20T16:48:15.650Z", "datePublished": "2025-06-24T18:27:21.479Z", "dateUpdated": "2025-06-24T18:47:46.713Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Navis N4", "vendor": "Kaleris", "versions": [{"lessThan": "4.0", "status": "affected", "version": "0", "versionType": "custom"}]}], "datePublic": "2025-06-24T18:23:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Kaleris NAVIS N4 ULC (Ultra Light Client) contains an unsafe Java deserialization vulnerability. 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This can be done by blocking the Ultra Light Client URLs in the load balancer or firewall by blocking the following patterns: \"url-pattern*.jnlp&lt;/url-pattern\" and \"url-pattern/ulc&lt;/url-pattern\"</li><li>The Ultra Light Client endpoint can also be disabled on the N4 Cluster node by commenting out relevant code in the web.xml file and restarting the server.</li><li>If the Ultra Light Client must be exposed to the Internet, do one of the following:<br>a. Set up a secure VPN connection to allow access for known external parties.<br>b. Set up an authenticated jump system (Citrix, VDI, Etc.).<br>c. Whitelist external allowed IPs. (least secure option)</li><li>Additionally, the following controls should be applied:<br>a. Restrict the number of N4 nodes exposed to the internet.<br>b. Ensure that HTTPS is enabled and configured on the filewall/loadbalancer.<br>c. Use a reliable third-party party firewall with built in DDOS protection that can detect unwanted intrusions.</li><li>Users are required to implement TLS in their load balancer. The setup for this is included in the Application Security Guide that is provided to all users.</li><li>A final option to consider is upgrading to N4 4.0, where the Ultra Light Client has been fully replaced with the HTML UI.</li></ul><p>Kaleris has sent a security advisory to all customers running Kaleris software.</p><p>For more information, users should email <a target=\"_blank\" rel=\"nofollow\">security@kaleris.com</a></p>\n\n<br>"}], "value": "Kaleris recommends users to implement the following versions or later:\n\n * Navis N4: Version 3.1.44+\n * Navis N4: Version 3.2.26+\n * Navis N4: Version 3.3.27+\n * Navis N4: Version 3.4.25+\n * Navis N4: Version 3.5.18+\n * Navis N4: Version 3.6.14+\n * Navis N4: Version 3.7.0+\n * Navis N4: Version 3.8.0+\n\n\nIf users are unable to update, Kaleris recommends following these mitigations:\n\n * If N4 does not need to be exposed to the internet, placing it behind a firewall.\n * If CAP needs to be exposed to the internet, disable the Ultra Light Client on the nodes being exposed. 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Use a reliable third-party party firewall with built in DDOS protection that can detect unwanted intrusions.\n * Users are required to implement TLS in their load balancer. 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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-2566", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-06-24T18:47:18.544221Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-06-24T18:47:42.879Z"}}], "cna": {"title": "Deserialization of Untrusted Data in Kaleris Navis N4", "source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Kaleris", "product": "Navis N4", "versions": [{"status": "affected", "version": "0", "lessThan": "4.0", "versionType": "custom"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Kaleris recommends users to implement the following versions or later:\n\n * Navis N4: Version 3.1.44+\n * Navis N4: Version 3.2.26+\n * Navis N4: Version 3.3.27+\n * Navis N4: Version 3.4.25+\n * Navis N4: Version 3.5.18+\n * Navis N4: Version 3.6.14+\n * Navis N4: Version 3.7.0+\n * Navis N4: Version 3.8.0+\n\n\nIf users are unable to update, Kaleris recommends following these mitigations:\n\n * If N4 does not need to be exposed to the internet, placing it behind a firewall.\n * If CAP needs to be exposed to the internet, disable the Ultra Light Client on the nodes being exposed. 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