{"id":"CVE-2026-7328","aliases":["EUVD-2026-47746","GHSA-c5v4-q445-wv84"],"status":"published","title":"Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service","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.\n\nThis issue affects Core Runtime Firmware: 2.1.0.","severity":{"version":"4.0","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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.0013,"percentile":0.0266,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-07-22T16:17:27Z","modified":"2026-10-28T02:30:41Z","products":[{"vendor":"caliptra","product":"core runtime firmware"}],"references":[{"url":"https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7328.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7328","tags":["advisory"]},{"url":"https://github.com/chipsalliance/caliptra-sw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-7328","title":"Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service","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.\n\nThis issue affects Core Runtime Firmware: 2.1.0.","status":"published","published":"2026-07-22T16:17:27.615Z","modified":"2026-07-22T18:49:41.784Z","cvss":[{"version":"4.0","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","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:20:05.830416Z"}],"euvd":[{"id":"EUVD-2026-47746","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.\n\nThis issue affects Core Runtime Firmware: 2.1.0.","status":"published","published":"2026-07-22T16:17:27Z","modified":"2026-07-22T18:49:41Z","cvss":[{"version":"4.0","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","level":"medium"}],"updated_at":"2026-11-02T18:19:44.868793Z"}],"nvd":[{"id":"CVE-2026-7328","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.\n\nThis issue affects Core Runtime Firmware: 2.1.0.","status":"published","published":"2026-07-22T17:16:59.557Z","modified":"2026-10-24T13:10:00.147Z","cvss":[{"version":"4.0","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/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","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:32.089897Z"}],"osv":[{"id":"CVE-2026-7328","title":"Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service","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.\n\nThis issue affects Core Runtime Firmware: 2.1.0.","status":"published","published":"2026-07-22T16:17:27.615Z","modified":"2026-10-28T02:30:41.981080418Z","cvss":[{"version":"4.0","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","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:45:16.365946Z"}]}}