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Vulnerability Details :

CVE-2026-7328

Summary
Assigner-Caliptra
Assigner Org ID-b01ddd03-5ef6-483b-b2c5-acba77f1a554
Published At-22 Jul, 2026 | 16:17
Updated At-22 Jul, 2026 | 18:49
Rejected At-
Credits

Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Caliptra
Assigner Org ID:b01ddd03-5ef6-483b-b2c5-acba77f1a554
Published At:22 Jul, 2026 | 16:17
Updated At:22 Jul, 2026 | 18:49
Rejected At:
▼CVE Numbering Authority (CNA)
Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service

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.

Affected Products
Vendor
Caliptra
Product
Core Runtime Firmware
Collection URL
https://github.com/chipsalliance/caliptra-sw
Package Name
Core Runtime Firmware
Modules
  • INVOKE_DPE_MLDSA87
  • CM_AES_GCM_DECRYPT_DMA
  • EXTERNAL_MAILBOX_CMD
Default Status
unaffected
Versions
Affected
  • 2.1.0 (semver)
Unaffected
  • 2.1.1 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-862CWE-862 Missing Authorization
Type: CWE
CWE ID: CWE-862
Description: CWE-862 Missing Authorization
Metrics
VersionBase scoreBase severityVector
4.06.8MEDIUM
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
Base score: 6.8
Base severity: MEDIUM
Vector:
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
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-122CAPEC-122 Privilege Abuse
CAPEC ID: CAPEC-122
Description: CAPEC-122 Privilege Abuse
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84
N/A
Hyperlink: https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:b01ddd03-5ef6-483b-b2c5-acba77f1a554
Published At:22 Jul, 2026 | 17:16
Updated At:22 Jul, 2026 | 19:17

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.06.8MEDIUM
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
N/A
Type: Secondary
Version: 4.0
Base score: 6.8
Base severity: MEDIUM
Vector:
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
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-862Secondaryb01ddd03-5ef6-483b-b2c5-acba77f1a554
CWE ID: CWE-862
Type: Secondary
Source: b01ddd03-5ef6-483b-b2c5-acba77f1a554
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84b01ddd03-5ef6-483b-b2c5-acba77f1a554
N/A
Hyperlink: https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84
Source: b01ddd03-5ef6-483b-b2c5-acba77f1a554
Resource: N/A

Change History

0
Information is not available yet

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