CVE-2026-103764 Mooncake transfer engine - Remote Code Execution & Information Disclosure

Mooncake transfer engine < 0.3.13 contains an untrusted pointer dereference in ServerSession::readHeader, letting unauthenticated attackers read and write arbitrary process memory via TCP transport data port, exploit requires crafted SessionHeader with arbitrary addr and size values.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.64% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution, Information Disclosure, Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2 October 2026
Updated
15 October 2026
Weakness
CWE-822

Vendor fix

Update to version 0.3.13 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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