{"id":"CVE-2026-103764","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-103764","generatedAt":"2026-10-28T02:58:10.896Z","title":"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.","description":"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.","published":"2026-10-02T00:16:59.000Z","lastModified":"2026-10-02T19:16:40.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":9.3,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-822"],"affected":[],"epss":{"score":0.00817,"percentile":0.56856,"date":"2026-10-26","history":[{"date":"2026-10-02","score":0.00636,"percentile":0.48655}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.82%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-02T00:16:59.000Z","detail":{"score":"9.3","severity":"CRITICAL","publishedAt":"2026-10-02T00:16:59.253Z"},"summary":"New CVE, critical severity (CVSS 9.3)."}],"references":[{"url":"https://github.com/kvcache-ai/Mooncake","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kvcache-ai/Mooncake/blob/6041a609a8c3af35e778f70db344f145c2914980/mooncake-transfer-engine/src/transport/tcp_transport/tcp_transport.cpp#L209","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kvcache-ai/Mooncake/commit/a2933849417259e562fc9cbad63c618d464dfb2d","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kvcache-ai/Mooncake/issues/4441","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kvcache-ai/Mooncake/releases/tag/v0.3.13","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/mooncake-transfer-engine-before-0.3.13-unauthenticated-arbitrary-memory-read-write-via-tcp-transport","source":"disclosure@vulncheck.com"},{"url":"https://github.com/kvcache-ai/Mooncake/issues/4441","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103764","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}