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CVE-2026-103764— Mooncake transfer engine before 0.3.13 Unauthenticated Arbitrary Memory Read/Write via TCP Transport

Quick assessment

Affected
kvcache-ai Mooncake
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mooncake 传输引擎在 0.3.13 版本之前存在一个不受信任的指针解引用漏洞，该漏洞位于 函数中，允许未经身份验证的攻击者通过 TCP 传输数据端口读取和写入任意进程内存。攻击者可以使用带有任意 和 值的伪造 ，并通过 或 操作码来泄露 KV 缓存内容、提示词和密钥信息，或者破坏内存以达成代码执行的目的。

CVSS 9.8 · Critical EPSS 0.64% · P49

Affected Version Matrix 1

VendorProduct Version RangeStatus
kvcache-ai Mooncake < 0.3.13 affected
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I. Basic Information for CVE-2026-103764

Vulnerability Information
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Vulnerability Title
Mooncake transfer engine before 0.3.13 Unauthenticated Arbitrary Memory Read/Write via TCP Transport
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
非可信指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kvcache-ai Mooncake 0 ~ 0.3.13 -

II. Public POCs for CVE-2026-103764

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III. Intelligence Information for CVE-2026-103764

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Vendor Advisories for CVE-2026-103764 (1)

Proof of Concept for CVE-2026-103764 (1)

Vendor Pages for CVE-2026-103764 (1)

Same Patch Batch · kvcache-ai · 2026-10-01 · 4 CVEs total

CVE-2026-103765 9.4 CRITICAL Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server
CVE-2026-103761 7.5 HIGH Mooncake transfer engine through 0.3.13.post1 Memory Exhaustion via Unbounded Notify Queue
CVE-2026-103760 5.9 MEDIUM Mooncake transfer engine through 0.3.13.post1 Denial of Service via P2P Handshake Daemon R

IV. Related Vulnerabilities

Same product: Mooncake
Same vendor: kvcache-ai
Same weakness: CWE-822

V. Comments for CVE-2026-103764

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