CVE-2026-103415

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Source
https://cve.org/CVERecord?id=CVE-2026-103415
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103415.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-103415
Aliases
  • GHSA-5pv3-rhf5-gwgq
Published
2026-10-14T17:36:17Z
Modified
2026-10-15T02:47:18Z
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

When a TLS 1.3 client processes a HelloRetryRequest, it copies the server's cookie into its second ClientHello without checking that the cookie fits in the outgoing packet. Both the length and the contents of that cookie come from the peer, and the write happens before certificate authentication completes, so a malicious or compromised server can overwrite memory past the caller supplied TLS packet buffer without presenting a certificate.

Only the client path is affected.

Database specific 
{
    "cna_assigner":  "eclipse",
    "cwe_ids":  [
        "CWE-787"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103415.json"
}
References

Affected packages

Git / github.com/eclipse-threadx/netxduo

Affected ranges

Type
GIT
Repo
https://github.com/eclipse-threadx/netxduo
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
1a0e9e43a03e37ddecfb6b49e9b078d6e1803d05
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "last_affected":  "6.5.1.202602"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v.*
v.6.4.4.202503_rel
v6.*
v6.0.1_rel
v6.0.2_rel
v6.0_rel
v6.1.10_rel
v6.1.11_rel
v6.1.12_rel
v6.1.2_rel
v6.1.3_rel
v6.1.4_rel
v6.1.5_rel
v6.1.6_rel
v6.1.7_rel
v6.1.8_rel
v6.1.9_rel
v6.1_rel
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-2026-103415.json"