Alerta · Publicado 15/05/2026 · Actualizado 18/05/2026
La Agencia de Ciberseguridad e Infraestructura de Estados Unidos (CISA) ha identificado y registrado la vulnerabilidad CVE-2026-42897 como activamente explotada en ataques reales. Esta vulnerabilidad afecta potencialmente a infraestructuras críticas y sistemas empresariales en México y Latinoamérica, requiriendo acción inmediata de los equipos de seguridad de la información.
CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-42897 Microsoft Exchange Server Cross-Site Scripting Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01
Alerta publicada por CISA / US-CERT. Consulta el advisory completo para detalles técnicos, indicadores de compromiso y mitigaciones específicas.