CVE-2025-59719 (GCVE-0-2025-59719)

Vulnerability from cvelistv5 – Published: 2025-12-09 17:20 – Updated: 2026-03-20 12:39
VLAI EUVD KEV
Summary
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.
CWE
  • CWE-347 - Improper access control
Assigner
References
Impacted products
Vendor Product Version
Fortinet FortiWeb Affected: 8.0.0
Affected: 7.6.0 , ≤ 7.6.4 (semver)
Affected: 7.4.0 , ≤ 7.4.9 (semver)
    cpe:2.3:a:fortinet:fortiweb:8.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.9:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.8:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.7:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.6:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.5:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiweb:7.4.0:*:*:*:*:*:*:*
Create a notification for this product.
EUVD KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2025-59719

Status: Confirmed

Status Updated: 2026-01-27 00:00 UTC

Exploited: Yes


Timestamps
First Seen: 2026-01-27
Asserted: 2026-01-27

Scope
Notes: Affected: Fortinet / Fortiweb | Description: An improper verification of cryptographic signature vulnerability in Fortinet FortiWeb may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message. | Origin source: CERT-AT | Notes: https://www.cert.at/en/blog/2026/1/threat-actors-use-forticloud-to-collect-ldap-connection-passwords, https://www.cert.at/en/blog/2026/1/look-at-forticloud-sso-bypass-exploitation

Evidence

Type: Csirt Report

Signal: Successful Exploitation

Confidence: 75%

Source: enisa-cnw-kev


Details
Cwes -
Euvd EUVD-2025-202191
Notes https://www.cert.at/en/blog/2026/1/threat-actors-use-forticloud-to-collect-ldap-connection-passwords, https://www.cert.at/en/blog/2026/1/look-at-forticloud-sso-bypass-exploitation
Catalog ENISA / EU CSIRTs Network (CNW) KEV JSON
Product Fortiweb
Datereported 2026/01/27
Originsource CERT-AT
Vendorproject Fortinet
Exploitationtype -
Vulnerabilityname -
Threatactorsexploiting -

References

Created: 2026-05-21 09:00 UTC | Updated: 2026-05-21 09:00 UTC
Show details on NVD website

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          "lang": "en",
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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