{"schema":"threatline.record/2","record":{"id":"CVE-2026-92154","aliases":["GHSA-wx8q-q5gx-f54p"],"summary":"F´: File size bounds bypass in Svc::FileUplink via unsigned integer overflow in DATA packet validation","details":"F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.2.0, Svc::FileUplink handleDataPacket offset and size validation is vulnerable because the component checks byteOffset plus dataSize with wrapping U32 arithmetic and then seeks to the large attacker-controlled offset before writing. When a file-uplink DATA packet supplies a byteOffset and dataSize whose unsigned sum wraps below the declared file size, data can be written beyond the declared upload size, causing file integrity loss and potentially large sparse-file growth or resource exhaustion. This issue is fixed in version 4.2.0.","categories":["Unclassified"],"product":"fprime","vendor":"nasa","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-92154","source_modified_at":"2026-10-15T18:55:39.170Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"fprime","vendor":"nasa","versions":[{"version":"< 4.2.0","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.0056,"percentile":0.4588,"score_date":"2026-10-23"},"published_at":"2026-10-14T17:17:20.331Z","modified_at":"2026-10-15T18:55:39.170Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-92154","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T18:55:39.170Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-92154","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/nasa/fprime/security/advisories/GHSA-wx8q-q5gx-f54p","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/nasa/fprime/pull/4919","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"total","assessed_at":"2026-10-15T18:54:50.578904Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-15T18:55:39.170Z","content_hash":"a4a3f9bc1c9810c8649c625861fd2e1bff102fa22c01ee8bf3ef24ed61fd3fa1"}}