{"schema":"threatline.record/2","record":{"id":"CVE-2026-103764","aliases":[],"summary":"Mooncake transfer engine before 0.3.13 Unauthenticated Arbitrary Memory Read/Write via TCP Transport","details":"Mooncake transfer engine before 0.3.13 contains an untrusted pointer dereference in ServerSession::readHeader that allows unauthenticated attackers to read and write arbitrary process memory via the TCP transport data port. Attackers can send a crafted SessionHeader with arbitrary addr and size values using READ or WRITE opcodes to disclose KV cache contents, prompts and secrets or corrupt memory toward code execution.","categories":["Unclassified"],"product":"Mooncake","vendor":"kvcache-ai","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103764","source_modified_at":"2026-10-02T18:22:06.535Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Mooncake","vendor":"kvcache-ai","versions":[{"version":"0","lessThan":"0.3.13","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103764","source_modified_at":"2026-10-02T18:22:06.535Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Mooncake","ecosystem":null},"version":"0.3.13","basis":"first unaffected version stated in the CVE record"}],"cvss":9.3,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00636,"percentile":0.49884,"score_date":"2026-10-23"},"published_at":"2026-10-01T23:19:57.849Z","modified_at":"2026-10-02T18:22:06.535Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-103764","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-02T18:22:06.535Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-103764","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/kvcache-ai/Mooncake/issues/4441","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/kvcache-ai/Mooncake/commit/a2933849417259e562fc9cbad63c618d464dfb2d","tags":["patch"]},{"source":"CVE List","url":"https://github.com/kvcache-ai/Mooncake/releases/tag/v0.3.13","tags":["release-notes"]},{"source":"CVE List","url":"https://github.com/kvcache-ai/Mooncake/blob/6041a609a8c3af35e778f70db344f145c2914980/mooncake-transfer-engine/src/transport/tcp_transport/tcp_transport.cpp#L209","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/kvcache-ai/Mooncake","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/mooncake-transfer-engine-before-0.3.13-unauthenticated-arbitrary-memory-read-write-via-tcp-transport","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-02T18:21:29.166526Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-02T18:22:06.535Z","content_hash":"bc7cea2f644f3f12ef1ad844d05097004387494719032c789ac7342a45c3ad2e"}}