CVE-2026-77105

Estado: AnalizadaAlta (8.7)—

CommServe contained a cryptographic signature verification issue affecting privilege management. Software customers upgrade to resolved maintenance release. Update CommServe and Web Server.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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: 0.30%
Percentil entre todas las CVEs puntuadas: 21
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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1556 Modify Authentication Processdefense impairment · persistence · credential access75 %
Impacto secundarioT1098 Account Manipulationpersistence · privilege escalation70 %

AV:N/PR:L/AC:L indica explotación de servicio remoto con privilegios. CWE-347 (firma criptográfica) y 'privilege management' sugieren suplantación/manipulación de cuentas administrativas tras la autenticación.

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 User Account Management Restrict File and Directory Permissions Operating System Configuration Network Segmentation Multi-factor Authentication

Tecnologías afectadas (1)

Commvault — Commvault

CWE

CWE-347

Referencias

https://documentation.commvault.com/securityadvisories/CV_2026_08_7.html

JSON original (NVD)

Mostrar

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