SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2025-59719

An improper verification of cryptographic signature vulnerability in Fortinet FortiWeb 8.0.0, FortiWeb 7.6.0 through 7.6.4, FortiWeb 7.4.0 through 7.4.9 may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a…

CRITICAL 9.8EPSS 29.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 29.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

An improper verification of cryptographic signature vulnerability in Fortinet FortiWeb 8.0.0, FortiWeb 7.6.0 through 7.6.4, FortiWeb 7.4.0 through 7.4.9 may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
29.22% probability · 98th percentile
CISA KEV
Not listed
Weakness
CWE-347
Affected
fortinet/fortiweb
Source
psirt@fortinet.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.