CVE-2026-104433

Mooncake before 0.3.12 Out-of-Bounds Read via P2P Handshake readString

HIGH
7.5
CVSS Score
Published: October 2, 2026 at 11:28 PM UTC
Updated: October 6, 2026 at 03:25 PM UTC
1 product affected across 1 vendorMooncake

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

Mooncake transfer engine before 0.3.12 contains an out-of-bounds read vulnerability in the readString function of include/common.h that allows unauthenticated attackers to crash the service by sending a zero-length handshake frame. Attackers can connect to the handshake port listening on all interfaces and send an eight-byte frame to terminate the hosting process, such as an SGLang inference server.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.3.12
Vendor states this is fixed in 0.3.12 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-125

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