CVE-2023-47537 Security feature bypass in FortiOS

What is CVE-2023-47537?

CVE-2023-47537 is a medium-severity vulnerability in Fortinet Fortios, published on 15 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An improper certificate validation vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.6, FortiOS 7.0.0 through 7.0.15, FortiOS 6.4 all versions allows a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the FortiLink communication channel between the FortiOS device and FortiSwitch.

Weakness: CWE-295

Which versions are affected by CVE-2023-47537?

It affects 1 product.

Products include Fortinet Fortios.

How do I fix CVE-2023-47537?

No fix has been published for CVE-2023-47537 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-47537 being exploited?

There is no known exploitation of CVE-2023-47537 in the wild and no public exploit code.

Other vulnerabilities in Fortinet Fortios

• CVE-2024-23113 Fortinet Multiple Products Format String Exploited Critical 9.8
• CVE-2022-40684 Fortinet Multiple Products Authentication Bypass Exploited Critical 9.8
• CVE-2024-55591 Fortinet FortiOS and FortiProxy Authentication Bypass Exploited Critical 9.6
• CVE-2024-21762 Fortinet FortiOS Out-of-Bound Write Exploited Critical 9.6
• CVE-2022-42475 Fortinet FortiOS Heap-Based Buffer Overflow Exploited Critical 9.3

All Fortinet Fortios vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-37rj-769r-rwrv.