CVE-2026-7328 (GCVE-0-2026-7328)
Vulnerability from cvelistv5 – Published: 2026-07-22 16:17 – Updated: 2026-07-22 18:49 X_Open Source
VLAI
EPSS
VEX
Title
Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service
Summary
Missing authorization in Caliptra Core Runtime Firmware (INVOKE_DPE_MLDSA87, CM_AES_GCM_DECRYPT_DMA, EXTERNAL_MAILBOX_CMD commands) in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond availability is integration-specific.
This issue affects Core Runtime Firmware: 2.1.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 18:49 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Caliptra | Core Runtime Firmware |
Affected:
2.1.0
(semver)
Unaffected: 2.1.1 (semver) |
guessed |
Date Public
2026-07-22 19:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-7328",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-22T18:49:34.151610Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-22T18:49:41.784Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://github.com/chipsalliance/caliptra-sw",
"defaultStatus": "unaffected",
"modules": [
"INVOKE_DPE_MLDSA87",
"CM_AES_GCM_DECRYPT_DMA",
"EXTERNAL_MAILBOX_CMD"
],
"packageName": "Core Runtime Firmware",
"product": "Core Runtime Firmware",
"vendor": "Caliptra",
"versions": [
{
"status": "affected",
"version": "2.1.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.1.1",
"versionType": "semver"
}
]
}
],
"datePublic": "2026-07-22T19:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Missing authorization in Caliptra Core Runtime Firmware (INVOKE_DPE_MLDSA87, CM_AES_GCM_DECRYPT_DMA, EXTERNAL_MAILBOX_CMD commands) in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond availability is integration-specific.\u003cp\u003eThis issue affects Core Runtime Firmware: 2.1.0.\u003c/p\u003e"
}
],
"value": "Missing authorization in Caliptra Core Runtime Firmware (INVOKE_DPE_MLDSA87, CM_AES_GCM_DECRYPT_DMA, EXTERNAL_MAILBOX_CMD commands) in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond availability is integration-specific.\n\nThis issue affects Core Runtime Firmware: 2.1.0."
}
],
"impacts": [
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-122 Privilege Abuse"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862 Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-22T16:17:27.615Z",
"orgId": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
"shortName": "Caliptra"
},
"references": [
{
"url": "https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84"
}
],
"source": {
"discovery": "INTERNAL"
},
"tags": [
"x_open-source"
],
"title": "Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service",
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
"assignerShortName": "Caliptra",
"cveId": "CVE-2026-7328",
"datePublished": "2026-07-22T16:17:27.615Z",
"dateReserved": "2026-04-28T16:55:51.837Z",
"dateUpdated": "2026-07-22T18:49:41.784Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-7328",
"date": "2026-10-27",
"epss": "0.0013",
"percentile": "0.02617"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"collectionURL": "https://github.com/chipsalliance/caliptra-sw",
"defaultStatus": "unaffected",
"modules": [
"INVOKE_DPE_MLDSA87",
"CM_AES_GCM_DECRYPT_DMA",
"EXTERNAL_MAILBOX_CMD"
],
"packageName": "Core Runtime Firmware",
"product": "Core Runtime Firmware",
"vendor": "Caliptra",
"versions": [
{
"status": "affected",
"version": "2.1.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.1.1",
"versionType": "semver"
}
]
}
],
"source": "b01ddd03-5ef6-483b-b2c5-acba77f1a554"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Missing authorization in Caliptra Core Runtime Firmware (INVOKE_DPE_MLDSA87, CM_AES_GCM_DECRYPT_DMA, EXTERNAL_MAILBOX_CMD commands) in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond availability is integration-specific.\n\nThis issue affects Core Runtime Firmware: 2.1.0."
},
{
"lang": "es",
"value": "Falta de autorizaci\u00f3n en el firmware de tiempo de ejecuci\u00f3n del n\u00facleo de Caliptra (comandos INVOKE_DPE_MLDSA87, CM_AES_GCM_DECRYPT_DMA, EXTERNAL_MAILBOX_CMD) en modo subsistema permite a un atacante local privilegiado causar una denegaci\u00f3n de servicio a trav\u00e9s de comandos de buz\u00f3n que contienen direcciones AXI no verificadas. El impacto de seguridad m\u00e1s all\u00e1 de la disponibilidad es espec\u00edfico de la integraci\u00f3n.\n\nEste problema afecta al firmware de tiempo de ejecuci\u00f3n del n\u00facleo: 2.1.0."
}
],
"id": "CVE-2026-7328",
"lastModified": "2026-10-24T13:10:00.147",
"metrics": {
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 6.8,
"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": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/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": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-7328",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-22T18:49:34.151610Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-07-22T17:16:59.557",
"references": [
{
"source": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
"url": "https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84"
}
],
"sourceIdentifier": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-862"
}
],
"source": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-7328",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-22T18:49:34.151610Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-22T18:49:38.735Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://github.com/chipsalliance/caliptra-sw",
"defaultStatus": "unaffected",
"modules": [
"INVOKE_DPE_MLDSA87",
"CM_AES_GCM_DECRYPT_DMA",
"EXTERNAL_MAILBOX_CMD"
],
"packageName": "Core Runtime Firmware",
"product": "Core Runtime Firmware",
"vendor": "Caliptra",
"versions": [
{
"status": "affected",
"version": "2.1.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.1.1",
"versionType": "semver"
}
]
}
],
"datePublic": "2026-07-22T19:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Missing authorization in Caliptra Core Runtime Firmware (INVOKE_DPE_MLDSA87, CM_AES_GCM_DECRYPT_DMA, EXTERNAL_MAILBOX_CMD commands) in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond availability is integration-specific.\u003cp\u003eThis issue affects Core Runtime Firmware: 2.1.0.\u003c/p\u003e"
}
],
"value": "Missing authorization in Caliptra Core Runtime Firmware (INVOKE_DPE_MLDSA87, CM_AES_GCM_DECRYPT_DMA, EXTERNAL_MAILBOX_CMD commands) in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond availability is integration-specific.\n\nThis issue affects Core Runtime Firmware: 2.1.0."
}
],
"impacts": [
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-122 Privilege Abuse"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862 Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-22T16:17:27.615Z",
"orgId": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
"shortName": "Caliptra"
},
"references": [
{
"url": "https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84"
}
],
"source": {
"discovery": "INTERNAL"
},
"tags": [
"x_open-source"
],
"title": "Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service",
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "b01ddd03-5ef6-483b-b2c5-acba77f1a554",
"assignerShortName": "Caliptra",
"cveId": "CVE-2026-7328",
"datePublished": "2026-07-22T16:17:27.615Z",
"dateReserved": "2026-04-28T16:55:51.837Z",
"dateUpdated": "2026-07-22T18:49:41.784Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.