Vulnerabilities CVE-2025-59718

CVE-2025-59718

Critical

Open

KEV

TLP:CLEAR

Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability

NVD CVE.org

AI Analysis

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Description

A improper verification of cryptographic signature vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4.0 through 7.4.10, FortiProxy 7.2.0 through 7.2.14, FortiProxy 7.0.0 through 7.0.21, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message.

Details

CVSS Score: 9.1
EPSS Score ⓘ: 63.44%

99.1th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Confidence: 100%
Published: Dec 9, 2025
Last Modified: Jul 14, 2026
CISA KEV
Date Added: Dec 16, 2025
Patch Due: Dec 23, 2025
Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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