CVE-2025-59719

Published Dec 9, 2025

Last updated 3 months ago

CVSS critical 9.8
Fortinet FortiWeb
API
Supply chain

Overview

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.
Source
psirt@fortinet.com
NVD status
Analyzed
Products
fortiweb

Risk scores

CVSS 3.1

Type
Secondary
Base score
9.8
Impact score
5.9
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity
CRITICAL

Weaknesses

psirt@fortinet.com
CWE-347

Social media

Hype score
Not currently trending
  1. 📌 استغلال ثغرات في جدران حماية FortiGate لاختراق الشبكات وسرقة بيانات الاعتماد 🛡️ الفئة: هجوم سيبراني 📝 الملخص: رصدت عمليات اختراق متعددة استهدفت جدران

    @GMashari

    16 Mar 2026

    160 Impressions

    1 Retweet

    2 Likes

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  2. 📌 استغلال ثغرات في جدران حماية FortiGate لاختراق الشبكات وسرقة بيانات الاعتماد رصدت عمليات اختراق متعددة استهدفت جدران الحماية FortiGate (NGFW) في أوائل عام 2026، حي

    @MisbarSec

    16 Mar 2026

    140 Impressions

    0 Retweets

    3 Likes

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  3. FortiGate NGFWs exploited since Nov 2025 via #CVE-2025-59718, CVE-2025-59719, CVE-2026-24858 to steal LDAP credentials & exfiltrate NTDS.dit. Patch immediately. #threatintel #mssp #cybersecurity #mssp

    @Cyberdailybrief

    11 Mar 2026

    143 Impressions

    0 Retweets

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  4. FortiGate機器を入口としたネットワーク侵害について。SentinelOne社報告。CVE-2025-59718、CVE-2025-59719、CVE-2026-24858で例示される既知の脆弱性の悪用。 https://t.co/YDeBMmdsL4

    @__kokumoto

    10 Mar 2026

    1282 Impressions

    1 Retweet

    5 Likes

    1 Bookmark

    0 Replies

    0 Quotes

  5. ⚠️ Vulnerabilidades en productos Fortinet ❗ CVE-2025-59719 ❗ CVE-2025-59718 ➡️ Más info: https://t.co/ZIVEEsEM7e https://t.co/zK6Nwjxc0y

    @CERTpy

    27 Jan 2026

    152 Impressions

    0 Retweets

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  6. 🚨 We are observing active exploitation of CVE-2025-59718 and CVE-2025-59719, targeting FortiCloud SSO to bypass authentication. Attackers are using these flaws to maintain valid sessions and persistence even after the underlying devices are fully patched. Patching closes the

    @ReliaQuestTR

    26 Jan 2026

    121 Impressions

    0 Retweets

    0 Likes

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  7. Fortinet confirms active FortiCloud SSO bypass affecting fully patched FortiGate firewalls, exploiting CVE-2025-59718 and CVE-2025-59719. Vulnerability allows persistent accounts, VPN access, and config theft. #FortinetRisk #SSOVulnerability #USA https://t.co/tYboJhOZlB

    @TweetThreatNews

    25 Jan 2026

    137 Impressions

    0 Retweets

    1 Like

    0 Bookmarks

    1 Reply

    0 Quotes

  8. 🚨 ALERTA FORTINET Firewalls FortiGate PARCHEADOS estan siendo hackeados - Parche de diciembre NO funciona - Atacantes crean backdoors en SEGUNDOS - Roban configs completas Solucion temporal: Desactivar FortiCloud SSO CVE-2025-59718 / CVE-2025-59719 #fortinet #cibersegurid

    @secnetnew

    24 Jan 2026

    2 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  9. Fortinet confirms FortiCloud SSO exploitation bypassing patches for CVE-2025-59718 and CVE-2025-59719. Attackers automate account creation, enable VPNs, and extract configs from FortiGate devices. #FortiCloudBreach #NetworkSecurity #USA https://t.co/XSELNE3X3q

    @TweetThreatNews

    24 Jan 2026

    160 Impressions

    0 Retweets

    1 Like

    0 Bookmarks

    0 Replies

    0 Quotes

  10. 🚨 Fortinet Confirms Active FortiCloud SSO Bypass Still Hits Fully Patched FortiGate Firewalls Fortinet confirmed attackers are exploiting a patch-bypass path for FortiCloud SSO auth flaws (CVE-2025-59718 / CVE-2025-59719) using crafted SAML messages, allowing persistence via n

    @ThreatSynop

    23 Jan 2026

    57 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  11. Onderzoekers melden actief misbruik in FortiCloud van kwetsbaarheden met kenmerken CVE-2025-59718 en CVE-2025-59719. Lees hier onze update van het high/high beveiligingsadvies: https://t.co/OwAkGwvQKz

    @ncsc_nl

    23 Jan 2026

    1218 Impressions

    2 Retweets

    4 Likes

    0 Bookmarks

    0 Replies

    1 Quote

  12. 🚨 Fortinet Confirms Active Exploitation of FortiCloud SSO Auth Bypass Targeting Even Patched FortiGates Fortinet confirmed an automated campaign abusing FortiCloud SSO authentication-bypass flaws (CVE-2025-59718 / CVE-2025-59719) to create rogue admin accounts, exfiltrate

    @ThreatSynop

    23 Jan 2026

    24 Impressions

    0 Retweets

    0 Likes

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    0 Replies

    0 Quotes

  13. Fortinetは、FortiGateを狙った攻撃で新たな攻撃経路が使われていると明らかにした。2025年12月に公表されたCVE-2025-59718およびCVE-2025-59719はFortiCloudのSSO機能を悪用した認証回避だったが、今回は修正後の最新版でも

    @yousukezan

    23 Jan 2026

    1163 Impressions

    5 Retweets

    14 Likes

    2 Bookmarks

    0 Replies

    0 Quotes

  14. Starting January 15, 2026, attackers exploited CVE-2025-59718 and CVE-2025-59719 to bypass FortiCloud SSO on FortiGate devices, altering firewall configs, creating admin accounts, and exporting sensitive data. #FortiGateAttacks #SSOBypass #USA https://t.co/dZsIDyQaGO

    @TweetThreatNews

    23 Jan 2026

    145 Impressions

    0 Retweets

    2 Likes

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    0 Replies

    0 Quotes

  15. A new cluster of automated malicious activity involving unauthorized firewall configuration changes on FortiGate devices. CVE-2025-59718 & CVE-2025-59719 #IOC https://t.co/X1i6yIgOxh

    @blackorbird

    23 Jan 2026

    2529 Impressions

    10 Retweets

    30 Likes

    6 Bookmarks

    2 Replies

    0 Quotes

  16. csirt_it: ‼️ #Exploited #Fortinet: rilevato possibile bypass di aggiornamenti rilasciati a Dicembre per le CVE-2025-59718 e CVE-2025-59719 🔗 https://t.co/cOKFFdSy7P https://t.co/abBVDuijyQ

    @Vulcanux_

    22 Jan 2026

    164 Impressions

    1 Retweet

    2 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  17. ‼️ #Exploited #Fortinet: rilevato possibile bypass di aggiornamenti rilasciati a Dicembre per le CVE-2025-59718 e CVE-2025-59719 🔗 https://t.co/EMOH8biqER https://t.co/7RoZa7D4qH

    @csirt_it

    22 Jan 2026

    231 Impressions

    0 Retweets

    4 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  18. In early December, Fortinet released an advisory for two critical authentication bypass vulnerabilities (CVE-2025-59718 and CVE-2025-59719). Shortly after disclosure, Arctic Wolf began observing intrusions involving malicious SSO logins on FortiGate appliances. Malicious logins

    @DCWebGuy

    22 Jan 2026

    55 Impressions

    0 Retweets

    0 Likes

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    0 Replies

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  19. 🚨 Fortinet SSO Bypass Under Active Attack The chatter isn't about failing patches. It’s about two critical auth bypass flaws (CVE-2025-59718 & CVE-2025-59719) in unpatched devices. Attackers began exploiting them within 72 hours of disclosure. The vulnerable component

    @photogrim_

    21 Jan 2026

    48 Impressions

    0 Retweets

    0 Likes

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  20. CVE-2025-59718 / CVE-2025-59719 Fortinet Poc https://t.co/8HgEks7nb5 #CyberSec

    @hack4lifemx

    27 Dec 2025

    62 Impressions

    0 Retweets

    0 Likes

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    1 Reply

    0 Quotes

  21. 🚨 Fortinet FortiGate SAML SSO Auth Bypass Under Active Exploitation (Patch Now) Threat actors are exploiting CVE-2025-59718 and CVE-2025-59719 (CVSS 9.8) to bypass FortiCloud SSO authentication via crafted SAML messages, then logging in as “admin” and exporting device

    @ThreatSynop

    24 Dec 2025

    3 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  22. FortiOS/FortiGate FortiCloud SSO Login Authentication Bypass Exploit !!! Only for the purpose of security research #FortiOS #FortiGate #CVE-2025-59718 #CVE-2025-59719 https://t.co/gy6uZFdHZO

    @ElyDemiurge

    24 Dec 2025

    88 Impressions

    0 Retweets

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  23. 🚨 𝗖𝗿𝗶𝘁𝗶𝗰𝗮𝗹 𝗔𝗹𝗲𝗿𝘁: 𝗙𝗼𝗿𝘁𝗶𝗻𝗲𝘁 𝗙𝗼𝗿𝘁𝗶𝗚𝗮𝘁𝗲 𝗩𝘂𝗹𝗻𝗲𝗿𝗮𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀 𝗨𝗻𝗱𝗲𝗿 𝗔𝗰𝘁𝗶𝘃𝗲 𝗔𝘁𝘁𝗮𝗰𝗸 CISA has designat

    @salttechnews

    22 Dec 2025

    61 Impressions

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  24. 🚨 Fortinet FortiOS [—] Dec 22, 2025 Comprehensive advisory detailing the latest critical vulnerabilities, risks, and response strategies for Fortinet FortiOS, including CVE-2025-59718 and CVE-2025-59719. Checkout our Threat Intelligence Platform:... https://t.co/0zPN4WrnTy

    @transilienceai

    22 Dec 2025

    87 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  25. Over 25,000 Fortinet devices with FortiCloud SSO remain exposed online. CVE-2025-59718 and CVE-2025-59719 enable attackers to bypass authentication via malicious SAML messages. #Fortinet #AuthenticationBypass #USA https://t.co/55EANd9dbO

    @TweetThreatNews

    21 Dec 2025

    17 Impressions

    0 Retweets

    0 Likes

    1 Bookmark

    0 Replies

    0 Quotes

  26. Fortinet SSO Under Siege: There is an active alert regarding 25,000+ Fortinet devices exposed to remote attacks. Threat actors are exploiting critical vulnerabilities (CVE-2025-59718 & CVE-2025-59719) in the FortiCloud Single Sign-On (SSO) feature to bypass authentication.

    @PinkPinklava

    20 Dec 2025

    35 Impressions

    0 Retweets

    0 Likes

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  27. We added fingerprinting of Fortinet devices with FortiCloud SSO enabled to our Device Identification reporting (at least 25K IPs seen globally). While not necessarily vulnerable to CVE-2025-59718/CVE-2025-59719 if you get a report from us regarding exposure, please verify/patch!

    @Shadowserver

    19 Dec 2025

    2874 Impressions

    9 Retweets

    19 Likes

    4 Bookmarks

    1 Reply

    0 Quotes

  28. En ciberseguridad IOT, dos nuevas vulnerabilidades en los productos Fortinet están siendo explotadas libremente . Vulnerabilidades CVE-2025-59718 y CVE-2025-59719 La vulnerabilidad, identificada como CVE‑2025‑64446, ha sido catalogada con una puntuación alta CVSS de 9,8/1

    @AbrahamAla5889

    18 Dec 2025

    88 Impressions

    0 Retweets

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  29. FortinetのSSO 脆弱性、公開直後から悪用を確認(CVE-2025-59718,CVE-2025-59719) https://t.co/UF47EROvVn #セキュリティ対策Lab #セキュリティ #Security #サイバー攻撃

    @securityLab_jp

    18 Dec 2025

    10 Impressions

    0 Retweets

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  30. For the latest Fortigate CVEs (CVE-2025-59718 & CVE-2025-59719), @HuntressLabs SIEM' is observing the following IPv4s associated with exploitation 📍 38.54.95[.]226 45.32.153[.]218 45.61.136[.]7 167.179.76[.]111 199.247.7[.]82 Detect for .... 🧵 https://t.co/uVNaHmlwF1

    @Purp1eW0lf

    18 Dec 2025

    3757 Impressions

    11 Retweets

    22 Likes

    8 Bookmarks

    1 Reply

    1 Quote

  31. 🚨 A recently disclosed pair of vulns affecting #Fortinet devices are being actively exploited in the wild. CVE-2025-59718 & CVE-2025-59719, carrying critical CVSSv3 scores, allow an unauthenticated remote attacker to gain device admin access. Read on: https://t.co/ELllZ43

    @rapid7

    17 Dec 2025

    9150 Impressions

    12 Retweets

    36 Likes

    9 Bookmarks

    3 Replies

    0 Quotes

  32. Fortinet auth bypass is being exploited in the wild: CVE-2025-59718 + CVE-2025-59719. If FortiCloud SSO admin login is enabled, attackers can log in as admin via a crafted SAML message.

    @shavvheen

    17 Dec 2025

    0 Impressions

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    1 Reply

    0 Quotes

  33. Fortinet heeft beveiligingsupdates uitgebracht voor FortiOS, FortiProxy, FortiWeb en FortiSwitchManager na meldingen van actief misbruik van twee ernstige kwetsbaarheden. Het gaat om CVE-2025-59718 en CVE-2025-59719, beide met een CVSS-score van 9,8. https://t.co/VNaHagvqqB

    @Guardian360nl

    17 Dec 2025

    69 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    1 Reply

    0 Quotes

  34. #threatreport #LowCompleteness Arctic Wolf Observes Malicious SSO Logins on FortiGate Devices Following Disclosure of CVE-2025-59718 and CVE-2025-59719 | 15-12-2025 Source: https://t.co/NHyKkb4eWR Key details below ↓ 🎯Victims: Fortinet fortigate users, Firewall and vpn http

    @rst_cloud

    17 Dec 2025

    16 Impressions

    0 Retweets

    0 Likes

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    0 Replies

    0 Quotes

  35. 🚨 Fortinet FortiGate devices are under active attack via SSO authentication bypass flaws. CVE-2025-59718 and CVE-2025-59719 both have CVSS scores of 9.8 and exploit the FortiCloud SSO 🔗 Details → https://t.co/sOvcptoRDG https://t.co/kUb2XJtoeG

    @abarbap

    17 Dec 2025

    0 Impressions

    0 Retweets

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    0 Replies

    0 Quotes

  36. ‼️Brīdinājums! Atklātas kritiskas ievainojamības FortiOS, FortiProxy, FortiSwitchManager un FortiWeb programmatūrā - CVE-2025-59718 un CVE-2025-59719 (CVSS 9.1) ⚠️Informācija liecina, ka ievainojamības jau tiek aktīvi izmantotas kiberuzbrukumos. Vairāk: https:/

    @certlv

    17 Dec 2025

    449 Impressions

    2 Retweets

    3 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  37. Cybersecurity experts report that threat actors are actively exploiting two newly disclosed vulnerabilities in Fortinet FortiGate devices, utilizing malicious SSO logins and authentication bypasses (CVE-2025-59718 & CVE-2025-59719). https://t.co/PVpSEYEuDW

    @Cyber_O51NT

    17 Dec 2025

    1402 Impressions

    5 Retweets

    11 Likes

    2 Bookmarks

    0 Replies

    0 Quotes

  38. Hackers exploit CVE-2025-59718 and CVE-2025-59719 to bypass FortiCloud SSO, gaining unauthorized admin access and stealing configs from multiple Fortinet products, excluding FortiOS 6.4a. #FortinetFlaws #SSOBypass #USA https://t.co/IomE0NDthH

    @TweetThreatNews

    17 Dec 2025

    24 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  39. Vulnerabilidades crítica en #Fortinet CVE-2025-59718 y CVE-2025-59719 (CVSS: 9.8). FortiCloud SSO está apagado por defecto pero se activa automáticamente cuando el equipo se registra. Se debe deshabilitar manualmente. PARCHEA! https://t.co/jUVf9vMf4B

    @SeguInfo

    16 Dec 2025

    1531 Impressions

    9 Retweets

    23 Likes

    3 Bookmarks

    0 Replies

    0 Quotes

  40. Fortinet reports active exploitation of FortiGate SSO flaws CVE-2025-59718 and CVE-2025-59719, enabling unauthenticated SAML logins and admin access. Advisory dated Dec 9 2025. #Vuln https://t.co/wdHVq8KxBz

    @threatcluster

    16 Dec 2025

    20 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  41. 🚨 CRITICAL: Fortinet devices under active attack via two SSO bypass flaws (CVE-2025-59718 & CVE-2025-59719). Attackers are forging SAML messages to gain admin access. Patch NOW or disable FortiCloud SSO! 🔥 #Fortinet #CyberAttack #Vulnerability 🔗 https://t.co/TZTqDIc

    @NetSecIO

    16 Dec 2025

    63 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  42. 🚨 FortiGate SSO Exploit Alert Active attacks exploiting CVE-2025-59718 & CVE-2025-59719 allow unauthenticated SAML-based SSO logins, giving attackers admin access. Affected: FortiOS, FortiWeb, FortiProxy, FortiSwitchManager (FortiCloud SSO enabled) 🔧 Patch immediatel

    @truething33

    16 Dec 2025

    74 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  43. Fresh Fortinet flaws CVE-2025-59718 & CVE-2025-59719 exploited days after patch release, bypassing FortiCloud SSO via crafted SAML responses. Attacks targeted admin accounts, leading to config theft. #FortinetBreach #SSOAttack #USA https://t.co/kK069S6YBf

    @TweetThreatNews

    16 Dec 2025

    8 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  44. 🚨 Active Exploitation Alert! Threat actors are actively exploiting two critical FortiGate vulnerabilities (CVE-2025-59718, CVE-2025-59719) that allow SAML SSO authentication bypass when FortiCloud SSO is enabled. #CybersecurityNews Full Story 👉 https://t.co/il1hlxjOFN http

    @CSec88

    16 Dec 2025

    511 Impressions

    3 Retweets

    5 Likes

    1 Bookmark

    0 Replies

    0 Quotes

  45. 🚨 Fortinet FortiGate devices are under active attack via SSO authentication bypass flaws. CVE-2025-59718 and CVE-2025-59719 both have CVSS scores of 9.8 and exploit the FortiCloud SSO feature. Disable FortiCloud SSO until systems are fully updated. 🔗 Details → https://

    @TheHackersNews

    16 Dec 2025

    33054 Impressions

    89 Retweets

    257 Likes

    78 Bookmarks

    4 Replies

    7 Quotes

  46. Onderzoekers melden actief misbruik in fortinet producten met kwetsbaarheden betreffende kenmerk CVE-2025-59718 en CVE-2025-59719. Lees hier onze update van het beveiligingsadvies: https://t.co/OwAkGwvQKz

    @ncsc_nl

    16 Dec 2025

    1524 Impressions

    1 Retweet

    2 Likes

    2 Bookmarks

    0 Replies

    0 Quotes

  47. FortiGate SSOの重大(Critical)な脆弱性が悪用されている。Arctic Wolf社報告。CVE-2025-59718とCVE-2025-59719で、いずれもCVSSスコア9.1。特定のホスティング事業者群からadminアカウントを直接狙うもの。 https://t.co/2HZP1oYBqZ

    @__kokumoto

    16 Dec 2025

    1309 Impressions

    1 Retweet

    7 Likes

    6 Bookmarks

    0 Replies

    0 Quotes

  48. Fortinet Patches Critical Authentication Bypass Vulnerabilities Tracked as CVE-2025-59718 and CVE-2025-59719 (CVSS score of 9.8), the two bugs are described as improper verification of cryptographic signature issues. They impact FortiOS, FortiWeb, FortiProxy, and https://t.co/Eo

    @johndjohnson

    12 Dec 2025

    53 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  49. 🔴 CVE-2025-59718 & CVE-2025-59719: Fortinet FortiCloud SSO Auth Bypass Fortinet's got two critical flaws (CVSS 9.6 and 9.8) in FortiCloud SSO allowing complete authentication bypass. What's nasty: CVE-2025-59718 exploits improper session validation—attackers craft ma

    @the_c_protocol

    11 Dec 2025

    105 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  50. 🚨🚨CVE-2025-59718 & CVE-2025-59719: FortiCloud SSO Authentication Bypass Unauthenticated attackers may bypass FortiCloud SSO by abusing crafted SAML messages when the feature is enabled. ZoomEye Dork👉app="Fortinet FortiSwitch" || app="Fortinet FortiWeb" || app="Forti

    @zoomeye_team

    11 Dec 2025

    8509 Impressions

    35 Retweets

    120 Likes

    47 Bookmarks

    0 Replies

    0 Quotes

Configurations

References

Sources include official advisories and independent security research.