CVSS 10.0CVSS 10.0 · CRITICAL

CVE-2026-47280

Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a network.

View on NVD

Analysis

Azure Resource Manager presenta una vulnerabilidad crítica de autenticación que permite a un atacante remoto elevar privilegios sobre la red sin autorización previa. Este fallo compromete la gestión integral de recursos en la nube, otorgando potencialmente control total sobre la infraestructura de Azure. Es fundamental verificar las identidades administradas y asegurar el entorno de ARM de inmediato.

Relevant roles

CloudCyberSecurityBackend

Severity

Score: 10.0(CRITICAL)

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

AV: NETWORK

AC: LOW

PR: NONE

UI: NONE

S: CHANGED

C: HIGH

I: HIGH

A: HIGH

Weakness (CWE): CWE-287NVD-CWE-noinfo

EPSS

Probability of exploitation (next 30 days): 0.0009 (0.1%)

Percentile: 26.2%

EPSS: 2026-06-05

Affects

microsoft:azure_resource_manager

Technical description

Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a network.

Published: 5/22/2026, 11:16:56 PM

Last modified: 5/27/2026, 4:14:33 PM

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47280

How to read this card

Actively exploited

KEV (Known Exploited Vulnerabilities) is CISA's catalog of CVEs confirmed as actively exploited in the real world. If a CVE is on KEV, someone is already using it in attacks.

CVSS 10.0

CVSS 10.0 — máxima severidad teórica. Explotable de forma remota, sin privilegios, con impacto total. Aún no confirmada como explotada en el mundo real, pero parchea ya.

AI-recommended

Un modelo de lenguaje revisó el CVE y consideró que afecta a software ampliamente desplegado o herramientas comunes de desarrollo. Un humano del equipo aprobó la publicación antes de que llegara aquí.

Categorías de impacto que evalúa la IA

widely_deployed_infra — kernel Linux, OpenSSL, glibc, k8s, Docker, nginx, OpenSSH.

popular_dev_tooling — Node.js, Python, Go, React, Next.js, librerías comunes de npm/pip.

common_consumer_software — Chrome, Firefox, Windows, macOS, apps móviles populares.

enterprise_saas — GitHub, GitLab, Atlassian, Salesforce, Cisco, Fortinet, Ivanti.

niche_software — CMS regionales, herramientas de hobby, librerías de poco uso.

not_relevant — firmware específico de proveedor, software descontinuado.

EPSS — EPSS (Exploit Prediction Scoring System) by FIRST.org estimates the probability that a CVE will be exploited in the next 30 days. Range is 0 to 1; very fresh CVEs typically score low until evidence accumulates.