CVE-2023-42786

Description

A null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versions and 6.0 all versions allows attacker to trigger a denial of service via a crafted http request.

Remediation

Solution:

  • Please upgrade to FortiSASE version 23.4.a or above Please upgrade to FortiOS version 7.4.2 or above Please upgrade to FortiOS version 7.2.6 or above

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 1.09% Top 25%
Vendor Advisory fortinet.com
Affected: Fortinet FortiOS
Published at:
Updated at:

References

Link Tags
https://fortiguard.fortinet.com/psirt/FG-IR-23-293 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-42786?
CVE-2023-42786 has been scored as a medium severity vulnerability.
How to fix CVE-2023-42786?
To fix CVE-2023-42786: Please upgrade to FortiSASE version 23.4.a or above Please upgrade to FortiOS version 7.4.2 or above Please upgrade to FortiOS version 7.2.6 or above
Is CVE-2023-42786 being actively exploited in the wild?
It is possible that CVE-2023-42786 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-42786?
CVE-2023-42786 affects Fortinet FortiOS.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.