CVE-2026-7328 - Vulnerability Details - OpenCVE

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.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

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References

Link	Providers
https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84

History

Wed, 22 Jul 2026 19:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 22 Jul 2026 16:30:00 +0000

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		https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84
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'}`

MITRE

Status: PUBLISHED

Assigner: Caliptra

Published: 2026-07-22T16:17:27.615Z

Updated: 2026-07-22T18:49:41.784Z

Reserved: 2026-04-28T16:55:51.837Z

Link: CVE-2026-7328

Vulnrichment

Updated: 2026-07-22T18:49:38.735Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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