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CVE-2024-55591

An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and FortiProxy version 7.0.0 through 7.0.19 and 7.2.0 through 7.2.12 allows a remote attacker to gain super-admin privileges via crafted requests to …

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An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and FortiProxy version 7.0.0 through 7.0.19 and 7.2.0 through 7.2.12 allows a remote attacker to gain super-admin privileges via crafted requests to Node.js websocket module.
CVSS 9.6 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.9/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.6: +1.44
  • Fresh EPSS: 94.35%: +0.47

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 29 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

The Hacker News
Press · 11 Aug 2026, 07:00 · Gunra Ransomware Exploits Fortinet FortiOS, FortiProxy Flaws to Breach Networks - The Hacker News
Infosecurity Magazine
Press · 10 Aug 2026, 07:00 · Gunra Ransomware Exploits Fortinet Flaws to Target Critical Infrastructure - Infosecurity Magazine
CyberSecurityNews
Press · 10 Aug 2026, 07:00 · Gunra Ransomware Exploits Fortinet VPN Flaws to Bypass MFA and Steal Enterprise Data - CyberSecurityNews
The Hacker News
Press · 11 Jun 2026, 07:00 · The Gentlemen Ransomware Claims 478 Victims, Can Spread Like a Worm - The Hacker News
CyberSecurityNews
Press · 14 May 2026, 07:00 · The Gentlemen RaaS Leverages Fortinet and Cisco Edge Devices for Initial Access - CyberSecurityNews
See all 29 source documents
The Hacker News
Press · 19 Mar 2026, 07:00 · ThreatsDay Bulletin: FortiGate RaaS, Citrix Exploits, MCP Abuse, LiveChat Phish & More - The Hacker News
Infosecurity Magazine
Press · 03 Jul 2025, 07:00 · Automation and Vulnerability Exploitation Drive Mass Ransomware Breaches - Infosecurity Magazine
BleepingComputer
Press · 06 Jun 2025, 07:00 · Critical Fortinet flaws now exploited in Qilin ransomware attacks - BleepingComputer
Dark Reading
Press · 19 Mar 2025, 07:00 · Critical Fortinet Vuln Draws Fresh Attention - Dark Reading
Infosecurity Magazine
Press · 19 Mar 2025, 07:00 · Fortinet Vulnerability Exploited in Ransomware Attack, CISA Warns - Infosecurity Magazine
The Record from Recorded Future News
Press · 17 Mar 2025, 07:00 · 'Mora_001' ransomware gang exploiting Fortinet bug spotlighted by CISA in January - The Record from Recorded Future News
SecurityWeek
Press · 14 Mar 2025, 07:00 · Recent Fortinet Vulnerabilities Exploited in ‘SuperBlack’ Ransomware Attacks - SecurityWeek
The Hacker News
Press · 12 Feb 2025, 08:00 · Ivanti Patches Critical Flaws in Connect Secure and Policy Secure – Update Now - The Hacker News
TechTarget
Press · 12 Feb 2025, 08:00 · Fortinet discloses second authentication bypass vulnerability - TechTarget
Security Affairs
Press · 11 Feb 2025, 08:00 · Attackers exploit a new zero-day to hijack Fortinet firewalls - Security Affairs
watchTowr Labs
Press · 27 Jan 2025, 08:00 · Get FortiRekt, I Am The Super_Admin Now - Fortinet FortiOS Authentication Bypass CVE-2024-55591 - watchTowr Labs
Dark Reading
Press · 27 Jan 2025, 08:00 · Fortinet Zero-Day Gives Attackers Super-Admin Privileges - Dark Reading
Help Net Security
Press · 22 Jan 2025, 08:00 · 48,000+ internet-facing Fortinet firewalls still open to attack - Help Net Security
Kroll
Press · 17 Jan 2025, 08:00 · FortiNet Discloses Active Exploitation of Critical Zero-Day Vulnerability | Cyber and Data Resilience - Kroll
Rapid7
Press · 16 Jan 2025, 08:00 · Fortinet Firewalls Hit with New Zero-Day Attack, Older Data Leak - Rapid7
The Record from Recorded Future News
Press · 16 Jan 2025, 08:00 · CISA warns of exploited Fortinet bugs as Microsoft issues its biggest Patch Tuesday in years - The Record from Recorded Future News
SecurityWeek
Press · 15 Jan 2025, 08:00 · Fortinet Confirms New Zero-Day Exploitation - SecurityWeek
The Hacker News
Press · 14 Jan 2025, 08:00 · Fortinet Warns of New Zero-Day Used in Attacks on Firewalls with Exposed Interfaces - The Hacker News
Arctic Wolf
Press · 14 Jan 2025, 08:00 · Recommendations for CVE-2024-55591 - Arctic Wolf
Help Net Security
Press · 14 Jan 2025, 08:00 · Fortinet fixes FortiOS zero-day exploited by attackers for months (CVE-2024-55591) - Help Net Security
TechCrunch
Press · 14 Jan 2025, 08:00 · Hackers are exploiting a new Fortinet firewall bug to breach company networks - TechCrunch
BleepingComputer
Press · 14 Jan 2025, 08:00 · Fortinet warns of auth bypass zero-day exploited to hijack firewalls - BleepingComputer
CERT-FR
Technical advisory · 14 Jan 2025, 00:00 · [MàJ] Vulnérabilité dans les produits Fortinet (14 janvier 2025)
CERT-FR
Press · 14 Jan 2025, 00:00 · [MàJ] Vulnérabilité dans les produits Fortinet (14 janvier 2025)

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.9 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

5

Public exploit entries / repo candidates

See 5 repos with metrics
RepositoryStarsForksLanguageUpdated
watchtowrlabs/fortios-auth-bypass-poc-CVE-2024-555917618Python27 Jan 2025, 19:11
sysirq/fortios-auth-bypass-poc-CVE-2024-555912712Python23 Jan 2025, 07:40
exfil0/CVE-2024-55591-POC128Python26 May 2025, 00:30
UMChacker/CVE-2024-55591-POC20Python26 May 2025, 12:13
uLl0a/cve-2024-55591-poc10Go18 Sep 2026, 04:49
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.6; EPSS 94.3%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:59:22.128001+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Added to the CISA KEV catalog
14 Jan 2025, 00:00
First press mention
14 Jan 2025, 00:00
Published
14 Jan 2025, 14:08
Latest press mention
11 Aug 2026, 07:00
Score calculated
05 Nov 2026, 13:59
PoCs on GitHub
5 repositories
Source: CVE List V5 · CISA KEV · FIRST EPSS · GitHub · RSSVulnRadar