CVE-2025-59719

criticalpriority · act · 90OT risk · criticalEU KEV · CERT-ATEPSS 0.292 · 98 %ileDEEUNLRUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

29.2% (98th) EPSS

CVSS 9.8 · critical

Is it mine?

52 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EU KEVflagged by CERT-ATreported 2026-01-27patched 2025-12-09

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.

EPSS · scored 2026-10-22

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedRUGGEDCOM APE1808siemens_psirt
Update Fortigate NGFW to V7.4.9 or later following the secure update recommendation procedure. Contact customer support to receive detailed information
FixedRUGGEDCOM APE1808cisa_csaf_ot
Update Fortigate NGFW to V7.4.9 or later following the secure update recommendation procedure. Contact customer support to receive detailed information
MitigationRUGGEDCOM APE1808siemens_psirt
To prevent being affected by this vulnerability on vulnerable versions, please turn off the FortiCloud login feature (if enabled, disabled by default) temporarily until upgrading to a non-affected version. (see https://fortiguard.fortinet.com/psirt/FG-IR-25-647 for more information)
MitigationRUGGEDCOM APE1808cisa_csaf_ot
To prevent being affected by this vulnerability on vulnerable versions, please turn off the FortiCloud login feature (if enabled, disabled by default) temporarily until upgrading to a non-affected version. (see https://fortiguard.fortinet.com/psirt/FG-IR-25-647 for more information)

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:Csecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@fortinet.comexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Siemens ProductCERT DE

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:Csecondary · NCSC-NL NL

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-347USCWE-347USCWE-347USCWE-347USCWE-347US

affected products (52)

Products and version ranges known to be affected.

Fortinet FortiOS <7.0.18all versionscert_bundDE
Fortinet FortiOS <7.2.12all versionscert_bundDE
Fortinet FortiOS <7.4.9all versionscert_bundDE
Fortinet FortiOS <7.6.4all versionscert_bundDE
Fortinet FortiProxy <7.0.22all versionscert_bundDE
Fortinet FortiProxy <7.2.15all versionscert_bundDE
Fortinet FortiProxy <7.4.11all versionscert_bundDE
Fortinet FortiProxy <7.6.4all versionscert_bundDE
Fortinet FortiSwitch Manager <7.0.6all versionscert_bundDE
Fortinet FortiSwitch Manager <7.2.7all versionscert_bundDE
Fortinet FortiWeb <7.4.10all versionscert_bundDE
Fortinet FortiWeb <7.6.5all versionscert_bundDE
Fortinet FortiWeb <8.0.1all versionscert_bundDE
Fortinet FortiOS< 7.0.18cert_bundDE
Fortinet FortiOS< 7.2.12cert_bundDE
Fortinet FortiOS< 7.4.9cert_bundDE
Fortinet FortiOS< 7.6.4cert_bundDE
Fortinet FortiProxy< 7.0.22cert_bundDE
Fortinet FortiProxy< 7.2.15cert_bundDE
Fortinet FortiProxy< 7.4.11cert_bundDE

showing 20 of 52

advisories (4)

Vendor and ecosystem advisories describing this.

NCSC-2025-0386Kwetsbaarheden verholpen in Fortinet productenNL2025-12-10csaf · ncsc_nlNL
Fortinet heeft kwetsbaarheden verholpen in FortiOS, FortiProxy, FortiWeb en FortiSwitchManager.
SSA-864900SSA-864900: Multiple Vulnerabilities in Fortigate NGFW before V7.6.6 on RUGGEDCOM APE1808 Devices2025-05-13csaf · siemens_psirtDE
Fortinet has published information on vulnerabilities in FortiOS. This advisory lists the related Siemens Industrial products. Siemens has released a new version for RUGGEDCOM APE1808 and recommends to update to the latest version.
WID-SEC-W-2025-2795Fortinet FortiOS, FortiProxy, FortiSwitch und FortiWeb: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2025-12-09csaf · cert_bundDE
Ein Angreifer kann eine Schwachstelle in Fortinet FortiOS, Fortinet FortiProxy, Fortinet FortiSwitch und Fortinet FortiWeb ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
ICSA-25-135-01Siemens RUGGEDCOM APE1808 Devices2025-05-13icsa · cisa_csaf_otUS
Fortinet has published information on vulnerabilities in FortiOS. This advisory lists the related Siemens Industrial products. Siemens is preparing fix versions and recommends to consult and implement the workarounds provided in Fortinet's upstream security notifications.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl siemens_psirt cisa_csaf_ot NVD CVE.org MITRE

published 2025-12-09modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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