{"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": "2026-08-04T00:02:34.093Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b01ddd03-5ef6-483b-b2c5-acba77f1a554", "shortName": "Caliptra", "dateUpdated": "2026-08-04T00:02:34.093Z"}, "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": [{"type": "text/html", "base64": false, "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"}}], "source": {"discovery": "INTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}}}

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