{"schema":"threatline.record/2","record":{"id":"CVE-2026-116734","aliases":[],"summary":"flatcc through 0.6.4 Out-of-Bounds Read via verifier check_header","details":"flatcc through 0.6.4 contains an integer overflow vulnerability in the check_header function of the FlatBuffers verifier because its overflow guard is dead code. On 32-bit builds, attackers can supply a crafted buffer offset that wraps the bounds check, causing an out-of-bounds read before the buffer and crashing the process.","categories":["Unclassified"],"product":"flatcc","vendor":"dvidelabs","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116734","source_modified_at":"2026-10-26T21:52:34.998Z","fetched_at":"2026-10-26T23:45:56.352924Z","product":"flatcc","vendor":"dvidelabs","versions":[{"version":"0","status":"affected","versionType":"custom","lessThanOrEqual":"0.6.4"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-26T21:52:34.998Z","modified_at":"2026-10-26T21:52:34.998Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-116734","fetched_at":"2026-10-26T23:45:56.352924Z","source_modified_at":"2026-10-26T21:52:34.998Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/dvidelabs/flatcc/commit/0df9c097a19badc8bd22d93af8fd47bd291e5d9f","tags":["patch"]},{"source":"CVE List","url":"https://github.com/dvidelabs/flatcc","tags":["product"]},{"source":"CVE List","url":"https://github.com/dvidelabs/flatcc/blob/v0.6.4/src/runtime/verifier.c#L126-L137","tags":["technical-description"]},{"source":"CVE List","url":"https://hackmd.io/@haindpwn/flatcc-json-number-oob-read","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/flatcc-through-0.6.4-out-of-bounds-read-via-verifier-check-header","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-26T21:52:34.998Z","content_hash":"98cc2b1f93cfd6ab80b1de3ef01d3114c9a0e5e09eae7de2ccc1522b03937b4a"}}