{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40896","assignerOrgId":"bec8025f-a851-46e5-b3a3-058e6b0aa23c","state":"PUBLISHED","assignerShortName":"Nozomi","dateReserved":"2025-04-16T09:04:35.922Z","datePublished":"2026-03-04T13:52:52.749Z","dateUpdated":"2026-03-04T14:11:30.915Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Arc","vendor":"Nozomi Networks","versions":[{"lessThan":"2.2.0","status":"affected","version":"0","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:nozomi_networks:arc:*:*:*:*:*:*:*:*","versionEndExcluding":"2.2.0","versionStartIncluding":"0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"credits":[{"lang":"en","type":"finder","user":"00000000-0000-4000-9000-000000000000","value":"This issue was found by Felix Eberstaller of Limes Security during a VAPT testing session commissioned by one of our customers."}],"datePublic":"2026-03-04T08:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<div><div>The server certificate was not verified when an Arc agent connected to a Guardian or CMC.</div></div><div><div>A malicious actor could perform a man-in-the-middle attack and intercept the communication between the Arc agent and the Guardian or CMC. This could result in theft of the client token and sensitive information (such as assets and alerts), impersonation of the server, or injection of spoofed data (such as false asset information or vulnerabilities) into the Guardian or CMC.</div></div>"}],"value":"The server certificate was not verified when an Arc agent connected to a Guardian or CMC.\n\n\n\nA malicious actor could perform a man-in-the-middle attack and intercept the communication between the Arc agent and the Guardian or CMC. This could result in theft of the client token and sensitive information (such as assets and alerts), impersonation of the server, or injection of spoofed data (such as false asset information or vulnerabilities) into the Guardian or CMC."}],"impacts":[{"capecId":"CAPEC-475","descriptions":[{"lang":"en","value":"CAPEC-475 Signature Spoofing by Improper Validation"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-295","description":"CWE-295 Improper Certificate Validation","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"bec8025f-a851-46e5-b3a3-058e6b0aa23c","shortName":"Nozomi","dateUpdated":"2026-03-04T13:52:52.749Z"},"references":[{"url":"https://security.nozominetworks.com/NN-2025:18-01"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<div><div><div><div>Upgrade Arc to v2.2.0 or later.</div></div></div></div>"}],"value":"Upgrade Arc to v2.2.0 or later."}],"source":{"discovery":"EXTERNAL"},"title":"Lack of TLS certificate validation when connecting Arc to a Guardian or CMC, in Arc before v2.2.0","x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-04T14:11:20.778867Z","id":"CVE-2025-40896","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-04T14:11:30.915Z"}}]}}