{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-11836",
        "assignerOrgId": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
        "state": "PUBLISHED",
        "assignerShortName": "Caliptra",
        "dateReserved": "2026-06-09T23:30:40.399Z",
        "datePublished": "2026-08-04T00:02:34.093Z",
        "dateUpdated": "2026-08-04T21:25:29.941Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
                "shortName": "Caliptra",
                "dateUpdated": "2026-08-04T21:25:29.941Z"
            },
            "title": "Production Debug-Unlock Token Verification Missing Device Binding",
            "datePublic": "2026-08-03T00:00:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-345",
                            "description": "CWE-345 Insufficient Verification of Data Authenticity",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-115",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-115 Authentication Bypass"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Caliptra",
                    "product": "Core ROM",
                    "collectionURL": "https://github.com/chipsalliance/caliptra-sw",
                    "packageName": "Core ROM",
                    "modules": [
                        "validate_debug_unlock_token()"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "2.0.0",
                            "lessThanOrEqual": "2.0.2",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "2.0.3",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "2.1.0",
                            "lessThanOrEqual": "2.1.1",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "2.1.2",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                },
                {
                    "vendor": "Caliptra",
                    "product": "Core Firmware",
                    "collectionURL": "https://github.com/chipsalliance/caliptra-sw",
                    "packageName": "Core Firmware",
                    "modules": [
                        "validate_debug_unlock_token()"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "2.0.0",
                            "lessThanOrEqual": "2.0.1",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "2.0.2",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "2.1.0",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "2.1.1",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Insufficient verification of data authenticity in Caliptra Core ROM and Core Firmware (validate_debug_unlock_token()) in subsystem mode allows an attacker with access to the integrator's debug unlock signing service to unlock production debug on an unintended device by presenting a valid token issued for a different device sharing the same debug unlock key hash. The 384-bit challenge nonce continues to prevent replay of previously issued tokens. Practical impact is limited to loss of per-device scope enforcement within a set of devices that share the same unlock authority by design; it does not enable debug unlock on devices outside that set.\n\nThis issue affects Core ROM: 2.0.0 through 2.0.2, 2.1.0 through 2.1.1; Core Firmware: 2.0.0 through 2.0.1, 2.1.0.",
                    "supportingMedia": [
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                            "value": "Insufficient verification of data authenticity in Caliptra Core ROM and Core Firmware (validate_debug_unlock_token()) in subsystem mode allows an attacker with access to the integrator's debug unlock signing service to unlock production debug on an unintended device by presenting a valid token issued for a different device sharing the same debug unlock key hash. The 384-bit challenge nonce continues to prevent replay of previously issued tokens. Practical impact is limited to loss of per-device scope enforcement within a set of devices that share the same unlock authority by design; it does not enable debug unlock on devices outside that set.<p>This issue affects Core ROM: 2.0.0 through 2.0.2, 2.1.0 through 2.1.1; Core Firmware: 2.0.0 through 2.0.1, 2.1.0.</p>"
                        }
                    ]
                }
            ],
            "tags": [
                "x_open-source"
            ],
            "references": [
                {
                    "url": "https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-hw68-jjx4-m376"
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV4_0": {
                        "attackVector": "LOCAL",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "HIGH",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "LOW",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "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": "LOW",
                        "baseScore": 1.8,
                        "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
                    }
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Alex Matrosov with Claude, Anthropic",
                    "type": "finder"
                }
            ],
            "source": {
                "discovery": "INTERNAL"
            },
            "x_generator": {
                "engine": "Vulnogram 1.0.2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-04T19:24:52.944825Z",
                                "id": "CVE-2026-11836",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "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": "2026-08-04T19:25:11.267Z"
                }
            }
        ]
    }
}