{"id":"CVE-2026-95109","title":"Cortex-A7 module data validation checks only the first address of a caller-supplied range","summary":"The Cortex-A7 MMU Modules port validates a caller-supplied buffer by translating **one address** — the first byte. The common Module Manager hands its range check the module instance, the start address and the complete byte size; the Cor…","severity":"high","cvss":8.5,"cvssVector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-125","CWE-787"],"vendor":"Eclipse Foundation","product":"ThreadX","affected":["ThreadX >= 6.1 <= 6.5.1.202602a"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-20T17:07:06.551689Z"},"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T17:07:15.973Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-95109","references":[{"url":"https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-fvp6-37q5-c648"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T16:10:53.317Z","slug":"CVE-2026-95109","body":"## Overview\n\nThe Cortex-A7 MMU Modules port validates a caller-supplied buffer by translating **one address** — the first byte. The common Module Manager hands its range check the module instance, the start address and the complete byte size; the Cortex-A7 implementation discarded the instance and the size and asked the MMU a single question about the start.\n\n\n\nA memory-protected module therefore passed any range whose first byte was user-readable, however far the rest of it reached. Privileged dispatch code then read or wrote the whole range. Because every protected-module dispatcher that consumes a buffer or an extra-parameter array goes through this one macro, the defect is not in any individual service: it is in the primitive all of them rely on.\n\n## Affected\n\n- `ThreadX >= 6.1 <= 6.5.1.202602a`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":46.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}