Vulnerability-Lookup

GHSA-52FG-7X3J-MP79

Vulnerability from github – Published: 2026-09-29 18:32 – Updated: 2026-09-29 18:32

Details

On the first DTLS ClientHello, the parser copies a device-claimed session_id length and validates the

ciphersuite-list length against the total record length instead of the remaining bytes. An unauthenticated

peer drives an OOB source read of up to 255 bytes, and those bytes are echoed verbatim into the outgoing

ServerHello, disclosing adjacent process memory over the network. The crash variant fires on the first

packet.

Severity

8.8 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-102712"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-29T18:17:10Z",
    "severity": "HIGH"
  },
  "details": "On the first DTLS ClientHello, the parser copies a device-claimed session_id length and validates the\n\n\n\nciphersuite-list length against the total record length instead of the remaining bytes. An unauthenticated\n\n\n\npeer drives an OOB source read of up to 255 bytes, and those bytes are echoed verbatim into the outgoing\n\n\n\nServerHello, disclosing adjacent process memory over the network. The crash variant fires on the first\n\n\n\npacket.",
  "id": "GHSA-52fg-7x3j-mp79",
  "modified": "2026-09-29T18:32:00Z",
  "published": "2026-09-29T18:32:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-5xr3-wpxf-rw5q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102712"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-102712 (GCVE-0-2026-102712)

Vulnerability from cvelistv5 – Published: 2026-09-29 17:39 – Updated: 2026-09-29 21:01

Summary

On the first DTLS ClientHello, the parser copies a device-claimed session_id length and validates the ciphersuite-list length against the total record length instead of the remaining bytes. An unauthenticated peer drives an OOB source read of up to 255 bytes, and those bytes are echoed verbatim into the outgoing ServerHello, disclosing adjacent process memory over the network. The crash variant fires on the first packet.

Severity

8.8 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-29 20:57 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

eclipse mitre root Scorecard

References

1 reference

URL	Tags
https://github.com/eclipse-threadx/netxduo/securi…

Impacted products

1 product

Vendor	Product	Version
Eclipse Foundation	NetX Duo	Affected: 0 , ≤ 6.5.1.202602 (semver)

Credits

cipher-creator afldl adawn0106

Show details on NVD website

JSON

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    "adp": [
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        "metrics": [
          {
            "other": {
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                "id": "CVE-2026-102712",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-29T20:57:42.888439Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        }
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            "Recovery": "NOT_DEFINED",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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GHSA-52FG-7X3J-MP79

CVE-2026-102712 (GCVE-0-2026-102712)

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