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.

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Fixes

Solution

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Workaround

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History

Sat, 03 Oct 2026 06:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 02 Oct 2026 01:30:00 +0000

Type Values Removed Values Added
First Time appeared Kvcache-ai
Kvcache-ai mooncake
Vendors & Products Kvcache-ai
Kvcache-ai mooncake

Thu, 01 Oct 2026 23:30:00 +0000

Type Values Removed Values Added
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.
Title Mooncake transfer engine before 0.3.13 Unauthenticated Arbitrary Memory Read/Write via TCP Transport
Weaknesses CWE-822
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-02T18:22:06.535Z

Reserved: 2026-10-01T10:39:47.845Z

Link: CVE-2026-103764

cve-icon Vulnrichment

Updated: 2026-10-02T18:21:56.075Z

cve-icon NVD

Status : Deferred

Published: 2026-10-02T00:16:59.253

Modified: 2026-10-02T19:16:39.627

Link: CVE-2026-103764

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-02T01:15:06Z

Weaknesses