CVE-2026-88779

Estado: AnalizadaAlta (8.7)⚠ Explotación activa

Vulnerability in NetScaler ADC and NetScaler Gateway.

This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Puntuación base: 8.7

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.59%
Percentil entre todas las CVEs puntuadas: 47
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).

CISA KEV — explotada activamente

Añadida al catálogo: 4/10/2026
Plazo de remediación: 7/10/2026
Uso conocido en ransomware: Unknown

📰 Cobertura en medios

Medios especializados en seguridad que han citado esta CVE:

The Register · Citrix NetScaler security snafus get even worse amid more 0-day reports (5/10/2026)
Help Net Security · CISA flags new exploited NetScaler flaw as attackers crash appliances (CVE-2026-88779) (5/10/2026)
Canadian Centre for Cyber Security · Citrix security advisory (AV26-996) (5/10/2026)
The Hacker News · New NetScaler Zero-Day Exploited in Targeted Attacks Can Knock SAML Deployments Offline (5/10/2026)
SecurityWeek · Exploitation of Citrix NetScaler Zero-Day Hits Appliances Patched Days Earlier (5/10/2026)
BleepingComputer · Citrix patches NetScaler SAML zero-day exploited in attacks (4/10/2026)
CISA · CISA Adds One Known Exploited Vulnerability to Catalog (4/10/2026)

🎯 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 access75 %
Impacto principalT1499 Endpoint Denial of Serviceimpact65 %

Vector CVSS NVD muestra AV:N/PR:N/UI:N, indicando explotación remota sin privilegios (T1190). VA:H sugiere disponibilidad afectada; sin detalles específicos de mecanismo, se asume DoS (T1499) como impacto probable en gateway/balanceador.

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 Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Tecnologías afectadas (2)

Citrix — Netscaler Application Delivery Controller Citrix — Netscaler Gateway

CWE

CWE-119

Referencias

JSON original (NVD)

Mostrar

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