{"id":"CVE-2026-7328","state":"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.","publishedAt":"2026-07-22T16:17:27.615Z","updatedAt":"2026-07-22T18:49:41.784Z","severity":{"score":6.8,"label":"Medium","version":"4.0","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","source":"Caliptra"},"assigner":"Caliptra","products":["Caliptra Core Runtime Firmware"],"affected":[{"vendor":"Caliptra","product":"Core Runtime Firmware","packageName":"Core Runtime Firmware","defaultStatus":"unaffected","versions":[{"version":"2.1.0","status":"affected","versionType":"semver"},{"version":"2.1.1","status":"unaffected","versionType":"semver"}],"collectionURL":"https://github.com/chipsalliance/caliptra-sw","modules":["INVOKE_DPE_MLDSA87","CM_AES_GCM_DECRYPT_DMA","EXTERNAL_MAILBOX_CMD"]}],"references":["https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/7xxx/CVE-2026-7328.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-7328","state":"PUBLISHED","datePublished":"2026-07-22T16:17:27.615Z","dateUpdated":"2026-07-22T18:49:41.784Z","assignerShortName":"Caliptra","assignerOrgId":"b01ddd03-5ef6-483b-b2c5-acba77f1a554","dateReserved":"2026-04-28T16:55:51.837Z"},"containers":{"cna":{"title":"Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Caliptra","product":"Core Runtime Firmware","packageName":"Core Runtime Firmware","defaultStatus":"unaffected","versions":[{"version":"2.1.0","status":"affected","versionType":"semver"},{"version":"2.1.1","status":"unaffected","versionType":"semver"}],"collectionURL":"https://github.com/chipsalliance/caliptra-sw","modules":["INVOKE_DPE_MLDSA87","CM_AES_GCM_DECRYPT_DMA","EXTERNAL_MAILBOX_CMD"]}],"references":[{"url":"https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.8,"vectorString":"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862 Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"Caliptra","orgId":"b01ddd03-5ef6-483b-b2c5-acba77f1a554","dateUpdated":"2026-07-22T16:17:27.615Z"},"datePublic":"2026-07-22T19:00:00.000Z","impacts":[{"capecId":"CAPEC-122","descriptions":[{"lang":"en","value":"CAPEC-122 Privilege Abuse"}]}],"tags":["x_open-source"],"source":{"discovery":"INTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-22T18:49:34.151610Z","id":"CVE-2026-7328","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-22T18:49:41.784Z"}}]}}}