CVE-2026-102761

NetX Duo's WebSocket client resets the unmasking cursor to the first `NX_PACKET` each time it advances through a chained packet, while the loop's upper bound belongs to the current packet. With the standard contiguous packet-pool layout, a masked server frame split across two packets therefore drives the XOR loop through the first packet's unused payload area and on through the second packet's `NX_PACKET` control block. The four-byte WebSocket masking key controls the bytes written, so the corruption is attacker-chosen rather than incidental.

CVSS

No CVSS.

References

Link	Resource
https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-6xgx-v7gw-qjph

Configurations

No configuration.

History

29 Sep 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 18:17

Updated : 2026-09-30 21:17

NVD link : CVE-2026-102761

Mitre link : CVE-2026-102761

CVE.ORG link : CVE-2026-102761

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

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