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.
CVE-2026-102761
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-102761
NetX Duo
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Eclipse Foundation",
"product": "NetX Duo",
"versions": [
{
"status": "affected",
"version": "6.2.0",
"versionType": "semver",
"lessThanOrEqual": "6.5.1.202602"
},
{
"status": "unaffected",
"version": "6.5.2.202603"
}
],
"packageName": "NetX Duo",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-102761
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #4953 · Revision 1
- Added to Heist Feed
- Publisher date