CVE-2026-7328CWE-862

Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service

Medium · published July 22, 2026

CVSS v4.0
6.8
EPSS
0%
Percentile
2.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.8 · 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
EPSS
0.00130 · 2.4th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-07-22T16:17Z
EPSS history
Timeline
  • 22 JUL 16:17Z
    Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service
    cvelistv5