{"id":"CVE-2026-13466","aliases":["EUVD-2026-85923","GHSA-h785-rv9q-vrg6"],"status":"published","title":"Unit Confusion in VAB Authentication","description":"Incorrect calculation of buffer size vulnerability in Altera Trusted Firmware on HPS allows Overflow Buffers.\n\nThis issue affects Trusted Firmware: through socfpga_v2.14.0.","severity":{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00109,"percentile":0.01216,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-131"],"published":"2026-09-24T14:51:27Z","modified":"2026-09-24T19:36:39Z","products":[{"vendor":"altera","product":"trusted firmware"}],"references":[{"url":"https://www.altera.com/product-security/advisory/asa-0006"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13466"},{"url":"https://github.com/advisories/GHSA-h785-rv9q-vrg6"}],"sources":{"cve":[{"id":"CVE-2026-13466","title":"Unit Confusion in VAB Authentication","description":"Incorrect calculation of buffer size vulnerability in Altera Trusted Firmware on HPS allows Overflow Buffers.\n\nThis issue affects Trusted Firmware: through socfpga_v2.14.0.","status":"published","published":"2026-09-24T14:51:27.734Z","modified":"2026-09-24T14:59:51.874Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H","level":"high","assessor":"cna"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T14:19:50.24628Z"}],"euvd":[{"id":"EUVD-2026-85923","description":"Incorrect calculation of buffer size vulnerability in Altera Trusted Firmware on HPS allows Overflow Buffers.\n\nThis issue affects Trusted Firmware: through socfpga_v2.14.0.","status":"published","published":"2026-09-24T14:51:27Z","modified":"2026-09-24T14:59:51Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H","level":"high"}],"updated_at":"2026-11-02T17:27:56.686358Z"}],"ghsa":[{"id":"GHSA-h785-rv9q-vrg6","title":"Incorrect calculation of buffer size vulnerability in Altera Trusted Firmware on HPS allows...","description":"Incorrect calculation of buffer size vulnerability in Altera Trusted Firmware on HPS allows Overflow Buffers.\n\nThis issue affects Trusted Firmware: through socfpga_v2.14.0.","status":"published","published":"2026-09-24T15:31:33Z","modified":"2026-09-24T15:31:40Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/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":"high"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"high"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T15:12:22.2852Z"}],"nvd":[{"id":"CVE-2026-13466","description":"Incorrect calculation of buffer size vulnerability in Altera Trusted Firmware on HPS allows Overflow Buffers.\n\nThis issue affects Trusted Firmware: through socfpga_v2.14.0.","status":"published","published":"2026-09-24T15:17:19.28Z","modified":"2026-09-24T19:36:39.327Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/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":"high","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T14:12:51.036099Z"}]}}