CVE-2026-24935

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{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-24935", "assignerOrgId": "f35eaae9-79f2-4d0d-a5c7-7bea6ed6be77", "state": "PUBLISHED", "assignerShortName": "ASUSTOR1", "dateReserved": "2026-01-28T08:40:24.462Z", "datePublished": "2026-02-03T02:28:56.413Z", "dateUpdated": "2026-02-03T15:30:54.564Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["Linux", "x86", "64 bit", "ARM"], "product": "ADM", "vendor": "ASUSTOR", "versions": [{"lessThanOrEqual": "4.3.3.ROF1", "status": "affected", "version": "4.1.0", "versionType": "custom"}, {"lessThanOrEqual": "5.1.1.RCI1", "status": "affected", "version": "5.0.0", "versionType": "custom"}]}], "credits": [{"lang": "en", "type": "reporter", "value": "Nuke"}], "datePublic": "2026-02-03T02:10:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "A third-party NAT traversal module fails to validate SSL/TLS certificates when connecting to the signaling server. While subsequent access to device services requires additional authentication, a Man-in-the-Middle (MitM) attacker can intercept or redirect the NAT tunnel establishment. This could allow an attacker to disrupt service availability or facilitate further targeted attacks by acting as a proxy between the user and the device services.<br><p>Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.1.RCI1.</p>"}], "value": "A third-party NAT traversal module fails to validate SSL/TLS certificates when connecting to the signaling server. While subsequent access to device services requires additional authentication, a Man-in-the-Middle (MitM) attacker can intercept or redirect the NAT tunnel establishment. This could allow an attacker to disrupt service availability or facilitate further targeted attacks by acting as a proxy between the user and the device services.\nAffected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.1.RCI1."}], "impacts": [{"capecId": "CAPEC-157", "descriptions": [{"lang": "en", "value": "CAPEC-157 Sniffing Attacks"}]}], "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:L/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-295", "description": "CWE-295 Improper Certificate Validation", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f35eaae9-79f2-4d0d-a5c7-7bea6ed6be77", "shortName": "ASUSTOR1", "dateUpdated": "2026-02-03T02:28:56.413Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://www.asustor.com/security/security_advisory_detail?id=50"}], "source": {"discovery": "UNKNOWN"}, "title": "An improper certificate validation vulnerability was found in a third-party NAT traversal module.", "x_generator": {"engine": "Vulnogram 0.5.0"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-24935", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-02-03T15:26:04.124110Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-03T15:26:04.831Z"}}]}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["Linux", "x86", "64 bit", "ARM"], "product": "ADM", "vendor": "ASUSTOR", "versions": [{"lessThanOrEqual": "4.3.3.ROF1", "status": "affected", "version": "4.1.0", "versionType": "custom"}, {"lessThanOrEqual": "5.1.1.RCI1", "status": "affected", "version": "5.0.0", "versionType": "custom"}]}], "source": "security@asustor.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:asustor:data_master:*:*:*:*:*:*:*:*", "matchCriteriaId": "662E4EA5-0C53-4669-947E-705E5E076B10", "versionEndIncluding": "4.3.3.rof1", "versionStartIncluding": "4.1.0.rhu2", "vulnerable": true}, {"criteria": "cpe:2.3:o:asustor:data_master:*:*:*:*:*:*:*:*", "matchCriteriaId": "7FC466AD-33C6-4F5C-A679-C5100B0B9B32", "versionEndExcluding": "5.1.2.re51", "versionStartIncluding": "5.0.0.ra82", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A third-party NAT traversal module fails to validate SSL/TLS certificates when connecting to the signaling server. While subsequent access to device services requires additional authentication, a Man-in-the-Middle (MitM) attacker can intercept or redirect the NAT tunnel establishment. This could allow an attacker to disrupt service availability or facilitate further targeted attacks by acting as a proxy between the user and the device services.\nAffected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.1.RCI1."}, {"lang": "es", "value": "Un m\u00f3dulo de recorrido NAT de terceros no valida los certificados SSL/TLS al conectarse al servidor de se\u00f1alizaci\u00f3n. Si bien el acceso posterior a los servicios del dispositivo requiere autenticaci\u00f3n adicional, un atacante man-in-the-middle (MitM) puede interceptar o redirigir el establecimiento del t\u00fanel NAT. Esto podr\u00eda permitir a un atacante interrumpir la disponibilidad del servicio o facilitar ataques dirigidos adicionales actuando como un proxy entre el usuario y los servicios del dispositivo.\nLos productos y versiones afectados incluyen: desde ADM 4.1.0 hasta ADM 4.3.3.ROF1, as\u00ed como desde ADM 5.0.0 hasta ADM 5.1.1.RCI1."}], "id": "CVE-2026-24935", "lastModified": "2026-06-17T10:23:50.400", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.4, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "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:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@asustor.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-24935", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-03T15:26:04.124110Z", "version": "2.0.3"}}]}, "published": "2026-02-03T03:15:53.507", "references": [{"source": "security@asustor.com", "tags": ["Vendor Advisory"], "url": "https://www.asustor.com/security/security_advisory_detail?id=50"}], "sourceIdentifier": "security@asustor.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "security@asustor.com", "type": "Secondary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-18T00:27:04.446142+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update that includes the certificate\u2011validation fix, such as ADM 4.3.3.ROF2 or newer and ADM 5.1.2.RCI2 or newer.", "If a firmware update cannot be installed immediately, isolate the device from untrusted networks and limit outbound traffic to only the authoritative signaling server, blocking other external connections.", "Monitor device logs and network traffic for anomalous NAT tunnel connections or unexpected proxies, and investigate any suspicious activity promptly."], "summary": {"action": "Patch ASAP", "impact": "Man\u2011in\u2011the\u2011Middle risk affecting NAT traversal and service availability"}, "threat_synthesis": {"affected_systems": "ASUSTOR ADM firmware versions from 4.1.0 through 4.3.3.ROF1 and from 5.0.0 through 5.1.1.RCI1 are impacted.", "description_and_impact": "A third\u2011party NAT traversal module in ASUSTOR ADM devices fails to validate SSL/TLS certificates when connecting to the signaling server. An attacker who can position themselves between the device and the server can intercept, alter, or redirect the NAT tunnel establishment. The attacker cannot immediately reach device services, but by acting as a transparent proxy they can disrupt service availability or later launch more targeted attacks against the device\u2019s internal services. This weakness is a classic certificate\u2011validation flaw that permits a MITM attack and carries the potential to compromise integrity and availability of the managed storage system.", "risk_and_exploitability": "The CVSS score of 6.3 indicates moderate risk. The EPSS score of less than 1% suggests that exploitation is currently considered unlikely, and the vulnerability is not listed in the CISA KEV catalog. The likely attack vector is a remote attacker able to insert themselves into the network path between the device and the official signaling server; this does not require local device compromise but does require control over the network or a compromised endpoint. Once positioned, the attacker could intercept the NAT traversal handshake, causing a denial of service or providing a foothold for further exploitation."}}}}, "created": "2026-02-04T12:14:31.397472+00:00", "updated": "2026-04-18T00:30:25.715367+00:00", "vendors": ["asustor", "asustor$PRODUCT$adm"]}