CVE-2026-103764
Published:October 01, 2026
Updated:October 09, 2026
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.
Affected Packages
https://github.com/kvcache-ai/Mooncake.git (GITHUB):
Affected version(s) >=v0.2.0 <v0.3.12Fix Suggestion:
Update to version v0.3.12mooncake-transfer-engine (PYTHON):
Affected version(s) >=0.3.0a0 <0.3.12Fix Suggestion:
Update to version 0.3.12mooncake-transfer-engine-cuda13 (PYTHON):
Affected version(s) >=0.3.9 <0.3.12Fix Suggestion:
Update to version 0.3.12mooncake-transfer-engine-non-cuda (PYTHON):
Affected version(s) >=0.3.7.post1 <0.3.12Fix Suggestion:
Update to version 0.3.12mooncake-transfer-engine-npu (PYTHON):
Affected version(s) =0.3.11.post1 <0.3.12Fix Suggestion:
Update to version 0.3.12Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Untrusted Pointer Dereference
EPSS
Base Score:
0.64