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CVE-2026-78662

Estado: AnalizadaAlta (7.5)—

Previously, a channel registered in the mux's chanList is not usable until it is established. A malicious peer was able flood the channel's incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad en golang crypto (AV:N/AC:L/PR:N/UI:N) que permite inundar canales no establecidos causando deadlock. El CWE-770 (asignación excesiva de recursos) y la descripción confirman DoS por agotamiento de conexión.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Golang — Crypto

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-78662",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-78662",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-09-03T13:19:47.340520Z"
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          "attackComplexity": "LOW",
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  "affected": [
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      "affectedData": [
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            {
              "name": "Dial"
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            {
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  "published": "2026-09-02T20:17:37.167",
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      "source": "security@golang.org"
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  "vulnStatus": "Analyzed",
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    }
  ],
  "lastModified": "2026-09-04T16:33:34.057",
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  "sourceIdentifier": "security@golang.org"
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