CVE-2023-42789 - CVE House
Back to Database
Status published Critical CVE-2023-42789

A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1,...

Vulnerability Description

A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15, FortiProxy 7.4.0, FortiProxy 7.2.0 through 7.2.6, FortiProxy 7.0.0 through 7.0.12, FortiProxy 2.0.0 through 2.0.13, FortiSASE 23.2.b allows attacker to execute unauthorized code or commands via specially crafted HTTP requests.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-42789

Credits & Attribution

No credits recorded in the NVD database.

References

More from Fortinet

View All →
CVE-2025-68686
An Exposure of Sensitive Information to an Unauthorized Actor vulnerability...
Medium 5.3
CVE-2025-68649
An improper limitation of a pathname to a restricted directory...
Medium 5.4
CVE-2025-68648
A use of externally-controlled format string vulnerability in Fortinet FortiAnalyzer...
Medium 6.5
CVE-2025-68482
A improper certificate validation vulnerability in Fortinet FortiAnalyzer 7.6.0 through...
Medium 6.3
CVE-2025-67862
An Internal Asset Exposed to Unsafe Debug Access Level or...
Medium 6

Affected Vendor

Affected Software

FortiProxy, FortiSASE, FortiOS
Vulnerable Versions:
7.4.0, 7.2.0, 7.0.0, 2.0.0, 23.2.b, 6.4.0, 6.2.0

Timeline

Official Publish: March 12th, 2024
Last Modified: July 8th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

Weaknesses (CWE)

CWE-787

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control
T1485 Data Destruction
Impact