October 16, 2026

CVE Watchtower

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CVE-2025-59718NVD

Vulnerability Summary

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.
Severity Level
CRITICAL(9.8)
Published Date
Dec 9, 2025
Last Modified
Jun 9, 2026
Exploitation Status
ACTIVE
EPSS Score (30-Day)
66.32%Probability
Root Weakness (CWE)
CWE-347: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Fortinet Fortiproxy >= 7.0.0 and < 7.0.22
  • Fortinet Fortiproxy >= 7.2.0 and < 7.2.15
  • Fortinet Fortiproxy >= 7.4.0 and < 7.4.11
  • Fortinet Fortiproxy >= 7.6.0 and < 7.6.4
  • Fortinet Fortiswitchmanager >= 7.0.0 and < 7.0.6
  • Fortinet Fortiswitchmanager >= 7.2.0 and < 7.2.7
  • Fortinet Fortios >= 7.0.0 and < 7.0.18
  • Fortinet Fortios >= 7.2.0 and < 7.2.12
  • Fortinet Fortios >= 7.4.0 and < 7.4.9
  • Fortinet Fortios >= 7.6.0 and < 7.6.4
  • Siemens Ruggedcom Ape1808 Firmware
Patched Versions
  • Fortinet Fortiproxy 7.0.22
  • Fortinet Fortiproxy 7.2.15
  • Fortinet Fortiproxy 7.4.11
  • Fortinet Fortiproxy 7.6.4
  • Fortinet Fortiswitchmanager 7.0.6
  • Fortinet Fortiswitchmanager 7.2.7
  • Fortinet Fortios 7.0.18
  • Fortinet Fortios 7.2.12
  • Fortinet Fortios 7.4.9
  • Fortinet Fortios 7.6.4
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References