CVE-2026-7328

MEDIUM

Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service

Title source: cna

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.

References (1)

Core 1

Core References

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

Scores

CVSS v4 6.8

EPSS 0.0009

EPSS Percentile 0.6%

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-862

Status published

Products (2)

Caliptra/Core Runtime Firmware 2.1.0

Caliptra/Core Runtime Firmware 2.1.1

Published Jul 22, 2026

Tracked Since Jul 22, 2026