CVE-2026-7328

Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service

Published Jul 22, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Caliptra
Caliptra core Runtime Firmware
Vendors & Products Caliptra
Caliptra core Runtime Firmware
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 6.8, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Caliptra
Published
Updated
Jul 22, 2026, 6:49 PM
Reserved
Apr 28, 2026, 4:55 PM
Status
Awaiting Analysis
Published
Jul 22, 2026, 5:16 PM
Modified
Oct 24, 2026, 1:10 PM