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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-93475",
        "assignerOrgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
        "state": "PUBLISHED",
        "assignerShortName": "eclipse",
        "dateReserved": "2026-09-23T13:42:24.314Z",
        "datePublished": "2026-10-20T15:04:30.044Z",
        "dateUpdated": "2026-10-20T17:02:52.372Z"
    },
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                "shortName": "eclipse",
                "dateUpdated": "2026-10-20T15:04:30.044Z"
            },
            "title": "Out-of-bounds Write via an Unbounded RSA Modulus in NetX Secure X.509",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-787",
                            "description": "CWE-787 Out-of-bounds Write",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-1284",
                            "description": "CWE-1284 Improper Validation of Specified Quantity in Input",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Eclipse Foundation",
                    "product": "Eclipse ThreadX - NetX Duo",
                    "packageName": "NetX Duo",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThanOrEqual": "6.5.1.202602",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "6.5.2.202603"
                        }
                    ],
                    "defaultStatus": "unaffected"
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            ],
            "descriptions": [
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                    "lang": "en",
                    "value": "The X.509 parser in NetX Secure accepts an RSA public key of any size, but every signature-verification path decrypts into fixed-size buffers dimensioned for the `NX_CRYPTO_MAX_RSA_MODULUS_SIZE` default of 4096 bits. A certificate carrying a larger modulus drives an out-of-bounds write past a file-scope static during ordinary certificate-chain verification.\n\n\n\nIt is reachable pre-authentication. The issuer used for the crypto operation is looked up in the remote, peer-supplied store before the trusted store, so the attacker supplies the oversized key themselves as an intermediate in the chain they present. It triggers on a TLS or DTLS client verifying a malicious server's chain, and on a server performing client-certificate authentication.",
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                            "value": "<p>The X.509 parser in NetX Secure accepts an RSA public key of any size, but every signature-verification path decrypts into fixed-size buffers dimensioned for the `NX_CRYPTO_MAX_RSA_MODULUS_SIZE` default of 4096 bits. A certificate carrying a larger modulus drives an out-of-bounds write past a file-scope static during ordinary certificate-chain verification.</p><p>It is reachable pre-authentication. The issuer used for the crypto operation is looked up in the remote, peer-supplied store before the trusted store, so the attacker supplies the oversized key themselves as an intermediate in the chain they present. It triggers on a TLS or DTLS client verifying a malicious server's chain, and on a server performing client-certificate authentication.</p>"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-rcv5-vfff-25gh"
                }
            ],
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                            "value": "GENERAL"
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                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "CRITICAL",
                        "baseScore": 9.3,
                        "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"
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                }
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                    "value": "fdesbiens",
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            "source": {
                "discovery": "UNKNOWN"
            },
            "x_generator": {
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        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-20T17:02:43.642743Z",
                                "id": "CVE-2026-93475",
                                "options": [
                                    {
                                        "Exploitation": "none"
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                                        "Automatable": "yes"
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                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
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                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-20T17:02:52.372Z"
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}