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CVE-2022-42475

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attack…

Read full description
A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.
CVSS 9.3 (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 9.3: +1.40
  • Fresh EPSS: 99.47%: +0.50

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

Sources: 17 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

Huntress
Press · 21 Nov 2025, 08:00 · CVE-2022-42475 Vulnerability: Analysis, Impact, Mitigation - Huntress
Dark Reading
Press · 14 Apr 2025, 07:00 · Fortinet Zero-Day Bug May Lead to Arbitrary Code Execution - Dark Reading
The Hacker News
Press · 11 Apr 2025, 07:00 · Fortinet Warns Attackers Retain FortiGate Access Post-Patching via SSL-VPN Symlink Exploit - The Hacker News
The Hacker News
Press · 12 Jun 2024, 07:00 · China-Backed Hackers Exploit Fortinet Flaw, Infecting 20,000 Systems Globally - The Hacker News
The Hacker News
Press · 09 Feb 2024, 08:00 · Fortinet Warns of Critical FortiOS SSL VPN Flaw Likely Under Active Exploitation - The Hacker News
See all 17 source documents
uscybercom (.mil)
Press · 07 Sep 2023, 07:00 · CNMF and Partners Illuminate Multiple Nation-State Exploitation Efforts - uscybercom (.mil)
watchTowr Labs
Press · 13 Jun 2023, 07:00 · Xortigate, or CVE-2023-27997 - The Rumoured RCE That Was - watchTowr Labs
TechTarget
Press · 02 Feb 2023, 08:00 · Threat activity increasing around Fortinet VPN vulnerability - TechTarget
watchTowr Labs
Press · 31 Jan 2023, 08:00 · We're Out Of Titles For VPN Vulns - It's Not Funny Anymore (Fortinet CVE-2022-42475) - watchTowr Labs
SOCRadar
Press · 23 Jan 2023, 08:00 · Attackers Exploit Fortinet Zero-Day CVE-2022-42475 with BoldMove Malware - SOCRadar
The Hacker News
Press · 20 Jan 2023, 08:00 · Chinese Hackers Exploited Recent Fortinet Flaw as 0-Day to Drop Malware - The Hacker News
Google Cloud
Press · 19 Jan 2023, 08:00 · Suspected Chinese Threat Actors Exploiting FortiOS Vulnerability (CVE-2022-42475) | Mandiant - Google Cloud
Dark Reading
Press · 19 Jan 2023, 08:00 · Attackers Crafted Custom Malware for Fortinet Zero-Day - Dark Reading
Security Affairs
Press · 13 Jan 2023, 08:00 · Threat actors target govt networks exploiting Fortinet SSL-VPN CVE-2022-42475 bug - Security Affairs
BleepingComputer
Press · 12 Jan 2023, 08:00 · Fortinet: Govt networks targeted with now-patched SSL-VPN zero-day - BleepingComputer
Arctic Wolf
Press · 18 Dec 2022, 08:00 · Recommendation for CVE-2022-42475 - Arctic Wolf
Recorded Future
Press · 14 Dec 2022, 08:00 · CVE-2022-42475: Fortinet Pre-authentication Code-execution Vulnerability - Recorded Future

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

4

Public exploit entries / repo candidates

See 4 repos with metrics
RepositoryStarsForksLanguageUpdated
scrt/cve-2022-4247510826Python14 Mar 2023, 08:41
P4x1s/CVE-2022-42475-RCE-POC81Python23 Mar 2023, 06:59
uLl0a/cve-2022-42475-poc10Go25 Aug 2026, 05:41
ArthurHendrich/CVE-2022-42475-POC00Python27 Feb 2026, 19:35
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 9.3; EPSS 99.5%
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 13:58:43.617123+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Added to the CISA KEV catalog
13 Dec 2022, 00:00
First press mention
14 Dec 2022, 08:00
Published
02 Jan 2023, 08:18
Latest press mention
21 Nov 2025, 08:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
4 repositories
Source: CVE List V5 · CISA KEV · FIRST EPSS · GitHub · RSSVulnRadar