CVE-2026-102761

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Source
https://cve.org/CVERecord?id=CVE-2026-102761
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102761.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102761
Aliases
  • GHSA-6xgx-v7gw-qjph
Published
2026-09-29T17:30:45Z
Modified
2026-10-02T03:30:25Z
Severity
  • 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "cna_assigner":  "eclipse",
    "cwe_ids":  [
        "CWE-787"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102761.json"
}
References

Affected packages

Git / github.com/eclipse-threadx/netxduo

Affected ranges

Type
GIT
Repo
https://github.com/eclipse-threadx/netxduo
Events
Introduced
96223b1c41bc6a28eac299a45e453a0837c843f5
Last Affected
1a0e9e43a03e37ddecfb6b49e9b078d6e1803d05
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "6.2.0"
        },
        {
            "last_affected":  "6.5.1.202602"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v.*
v.6.4.4.202503_rel
v6.*
v6.2.0_rel
v6.2.1_rel
v6.3.0_rel
v6.4.0_rel
v6.4.1_rel
v6.4.2_rel
v6.4.3_rel
v6.4.4.202503a
v6.4.5.202504_rel
v6.5.0.202601_rel
v6.5.1.202602_rel

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102761.json"