CVE-2026-48021

Estado: AplazadaCrítica (9.1)—

In epa4all, prior to version 2026-05-20, an attacker who can intercept the TLS connection between epa4all and the ePA backend can complete the VAU handshake with attacker-controlled keys and obtain the session encryption keys. All inner HTTP traffic (patient consent decisions, medication data, document operations, authorization tokens, and entitlement queries) becomes readable and modifiable. The attacker can also inject arbitrary requests through the hijacked channel. This issue has been patched in version 2026-05-20.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Puntuación base: 9.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.19%
Percentil entre todas las CVEs puntuadas: 8
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access85 %
Impacto principalT1557 Adversary-in-the-Middlecredential access · collection90 %
Impacto secundarioT1078 Valid Accountsstealth · persistence · privilege escalation · initial access80 %
Impacto secundarioT1565 Data Manipulationimpact85 %

AV:N/PR:N/UI:N indica explotación remota sin privilegios (T1190). MitM en TLS permite interceptar y modificar tráfico sensible (credenciales, tokens de autorización, datos médicos): T1557 (adversario en medio), T1565 (manipulación de datos), T1078 (uso de credenciales/tokens capturados).

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

Network Segmentation User Training Privileged Account Management Limit Access to Resource Over Network Filter Network Traffic Encrypt Sensitive Information

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Epa4all — Epa4all^AI

CWE

CWE-295, CWE-347

Referencias

JSON original (NVD)

Mostrar

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  "id": "CVE-2026-48021",
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        "ssvcData": {
          "id": "CVE-2026-48021",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-07-25T00:56:57.881404Z"
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.2,
        "exploitabilityScore": 3.9
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      "affectedData": [
        {
          "vendor": "med-united",
          "product": "epa4all",
          "versions": [
            {
              "status": "affected",
              "version": "< 2026-05-20"
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  "published": "2026-07-24T19:16:58.033",
  "references": [
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      "url": "https://github.com/med-united/epa4all/releases/tag/2026-05-20",
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      "url": "https://github.com/med-united/epa4all/security/advisories/GHSA-vvh7-x6c7-46gh",
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      "value": "In epa4all, prior to version 2026-05-20, an attacker who can intercept the TLS connection between epa4all and the ePA backend can complete the VAU handshake with attacker-controlled keys and obtain the session encryption keys. All inner HTTP traffic (patient consent decisions, medication data, document operations, authorization tokens, and entitlement queries) becomes readable and modifiable. The attacker can also inject arbitrary requests through the hijacked channel. This issue has been patched in version 2026-05-20."
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  "lastModified": "2026-07-30T19:19:45.637",
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