CVE-2026-78237

Estado: AplazadaAlta (7.8)—

Insufficient input validation in ABR allows a low-privileged user to inject malicious entries into the sudoers file, resulting in persistent root access that remained effective after the ABR session ended.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.15%
Percentil entre todas las CVEs puntuadas: 4
Fecha de la puntuación: 5/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation95 %
Impacto principalT1098.002 Additional Email Delegate Permissionspersistence · privilege escalation85 %
Impacto secundarioT1548.003 Sudo and Sudo Cachingprivilege escalation80 %

Acceso local (AV:L) sin interacción (UI:N) permite escalada de privilegios mediante inyección en sudoers. El impacto de acceso root persistente se mapea a creación de cuentas con privilegios (T1098.002) y abuso de mecanismos de escalada (T1548.003).

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

Privileged Account Management Threat Intelligence Program Restrict File and Directory Permissions Operating System Configuration Multi-factor Authentication Execution Prevention

Tecnologías afectadas (1)

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

ABR — ABR^AI

CWE

CWE-20

Referencias

JSON original (NVD)

Mostrar

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  "id": "CVE-2026-78237",
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-78237",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-26T14:00:23.465902Z"
        }
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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 1.1
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  "affected": [
    {
      "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4",
      "affectedData": [
        {
          "vendor": "Admin By Request (ABR)",
          "product": "Admin By Request (ABR)",
          "versions": [
            {
              "status": "affected",
              "version": "5.2.2 and below"
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  "published": "2026-08-26T08:16:46.720",
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      "url": "https://docs.adminbyrequest.com/security-advisories/abr-mac-26-02.htm",
      "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"
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      "value": "Insufficient input validation in ABR allows a low-privileged user to inject malicious entries into the sudoers file, resulting in persistent root access that remained effective after the ABR session ended."
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  "lastModified": "2026-09-03T16:59:26.287",
  "sourceIdentifier": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"
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