CVE Watch—

CVE-2025-59718

Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability

CVSS

—

Sin CVSS

EPSS

68.7%

p99

KEV

SÍ

16 dic 2025

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

63.0%EPSS · 30 días68.7%

2026-08-022026-08-31

Ficha del catálogo KEV

Producto

Fortinet / Multiple Products

Vulnerabilidad

Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability

Añadido a KEV

16 dic 2025

Remediar antes de

23 dic 2025

Uso conocido en ransomware

Descripción resumida

Fortinet FortiOS, FortiSwitchMaster, FortiProxy, and FortiWeb contain an improper verification of cryptographic signature vulnerability that may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML message. Please be aware that CVE-2025-59719 pertains to the same problem and is mentioned in the same vendor advisory. Ensure to apply all patches mentioned in the advisory.

Acción requerida

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notas

https://fortiguard.fortinet.com/psirt/FG-IR-25-647 ; https://docs.fortinet.com/upgrade-tool/fortigate ; https://nvd.nist.gov/vuln/detail/CVE-2025-59718

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