{"schema":"threatline.record/2","record":{"id":"CVE-2026-92157","aliases":["GHSA-hcmw-g425-8h9g"],"summary":"F´: FileDownlink SendPartial integer overflow lets legal startOffset/length values reach a reachable assertion","details":"F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.3.0, Svc::FileDownlink SendPartial range validation is vulnerable because unchecked startOffset plus length arithmetic bypasses the range check and stores a wrapped m_endOffset that is inconsistent with m_byteOffset. When an existing source file is larger than a valid startOffset and a SendPartial command supplies a length whose U32 sum with that offset wraps below the file size, under standard F Prime assertion handling, the first data-packet transition reaches FW_ASSERT and aborts or resets the process, causing denial of service. This issue is fixed in version 4.3.0.","categories":["Unclassified"],"product":"fprime","vendor":"nasa","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-92157","source_modified_at":"2026-10-20T01:42:27.964Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"fprime","vendor":"nasa","versions":[{"version":"< 4.3.0","status":"affected"}],"defaultStatus":null},{"source":"GitHub Advisory Database","source_url":"https://github.com/nasa/fprime/security/advisories/GHSA-hcmw-g425-8h9g","source_modified_at":"2026-09-15T23:25:33Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"ecosystem":"","name":"fprime"},"range":"<= 4.2.1"}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/nasa/fprime/security/advisories/GHSA-hcmw-g425-8h9g","source_modified_at":"2026-09-15T23:25:33Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"ecosystem":"","name":"fprime"},"version":"4.3"}],"cvss":6.5,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.0042,"percentile":0.35282,"score_date":"2026-10-23"},"published_at":"2026-10-14T17:09:20.199Z","modified_at":"2026-10-20T01:42:27.964Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-92157","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T01:42:27.964Z"},{"source":"GitHub Advisory Database","url":"https://github.com/nasa/fprime/security/advisories/GHSA-hcmw-g425-8h9g","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-09-15T23:25:33Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-92157","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","GitHub Advisory Database","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/nasa/fprime/security/advisories/GHSA-hcmw-g425-8h9g","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/nasa/fprime/pull/5565","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/nasa/fprime/commit/33fe2a4fe3fd5ff1b14985669fbad09f070e9914","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/nasa/fprime/commit/95eeb5cfb44e5609eff0887f0e11e640cdacef6b","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/nasa/fprime/releases/tag/v4.3.0","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":"partial","assessed_at":"2026-10-20T01:42:03.567016Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-20T01:42:27.964Z","content_hash":"beb91063116f17d219d9fd1ad378150bdb1a2c4afa503a736581426b3f985c4d"}}