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CVE-2022-42475

Published: Jan 2, 2023Updated: Oct 24, 2025 Sources: CVE List NVD BDU csafCWE-197
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
99.5%
Top 0.1%
CISA KEV
Active Exploitation
Since Dec 13, 2022
Exploits
1 Known
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-197CWE-787

Affected Products

FortiProxyFortinet Inc.Security Products
FortiOSFortinet Inc.Security Products
FortiOS-6K7KFortinet Inc.Security Products
fortiosfortinetSecurity Products
fortiproxyfortinetSecurity Products
fortinet inc.commercialUSNetworking Infrastructureaka fortinet
fortinetcommercialUSSecurity Productsaka forti net
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Dec 13, 2022
Remediation due:Jan 3, 2023
Ransomware:Known ransomware use

Required action: Apply updates per vendor instructions.

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://www.fortiguard.com/psirt/FG-IR-22-398
fortiguard.com
https://olympecyberdefense.fr/vpn-ssl-fortigate
olympecyberdefense.fr
https://fortiguard.com/psirt/FG-IR-22-398
fortiguard.com
and 87 more references View all →

Timeline

Added to CISA KEV
Dec 13, 2022
Published
Jan 2, 2023
Last Updated
Oct 24, 2025
News mentions
1

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