CVE-2023-27997

Known Exploited

Description

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

Remediation

Solution:

  • Please upgrade to FortiOS-6K7K version 7.0.12 or above Please upgrade to FortiOS-6K7K version 6.4.13 or above Please upgrade to FortiOS-6K7K version 6.2.15 or above Please upgrade to FortiOS-6K7K version 6.0.17 or above Please upgrade to FortiProxy version 7.2.4 or above Please upgrade to FortiProxy version 7.0.10 or above Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.5 or above Please upgrade to FortiOS version 7.0.12 or above Please upgrade to FortiOS version 6.4.13 or above Please upgrade to FortiOS version 6.2.14 or above Please upgrade to FortiOS version 6.0.17 or above

Categories

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 87.94% Top 5%
KEV Since 
Vendor Advisory fortiguard.com
Affected: Fortinet FortiOS-6K7K
Affected: Fortinet FortiProxy
Affected: Fortinet FortiOS
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2023-27997?
CVE-2023-27997 has been scored as a critical severity vulnerability.
How to fix CVE-2023-27997?
To fix CVE-2023-27997: Please upgrade to FortiOS-6K7K version 7.0.12 or above Please upgrade to FortiOS-6K7K version 6.4.13 or above Please upgrade to FortiOS-6K7K version 6.2.15 or above Please upgrade to FortiOS-6K7K version 6.0.17 or above Please upgrade to FortiProxy version 7.2.4 or above Please upgrade to FortiProxy version 7.0.10 or above Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.5 or above Please upgrade to FortiOS version 7.0.12 or above Please upgrade to FortiOS version 6.4.13 or above Please upgrade to FortiOS version 6.2.14 or above Please upgrade to FortiOS version 6.0.17 or above
Is CVE-2023-27997 being actively exploited in the wild?
It is confirmed that CVE-2023-27997 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~88% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-27997?
CVE-2023-27997 affects Fortinet FortiOS-6K7K, Fortinet FortiProxy, 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.