Fortinet FortiOS up to 7.0.x/7.2.6/7.4.1 certificate validation

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Fortinet FortiOS up to 7.0.x/7.2.6/7.4.1. The impacted element is an unknown function. The manipulation results in certificate validation. This vulnerability is known as CVE-2023-47537. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Fortinet FortiOS up to 7.0.x/7.2.6/7.4.1 (Firewall Software). Affected is an unknown function. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published 02/09/2024 as FG-IR-23-301. The advisory is shared for download at fortiguard.com. This vulnerability is traded as CVE-2023-47537 since 11/06/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1587.003.

Upgrading to version 7.2.7 or 7.4.2 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.8
NVD Vector: 🔍

CNA Base Score: 4.8
CNA Vector (Fortinet, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FortiOS 7.2.7/7.4.2

Timelineinfo

11/06/2023 🔍
02/09/2024 +95 days 🔍
02/09/2024 +0 days 🔍
01/14/2026 +705 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-23-301
Status: Confirmed

CVE: CVE-2023-47537 (🔍)
GCVE (CVE): GCVE-0-2023-47537
GCVE (VulDB): GCVE-100-253260

Entryinfo

Created: 02/09/2024 03:53
Updated: 01/14/2026 15:17
Changes: 02/09/2024 03:53 (40), 03/02/2024 16:02 (1), 03/02/2024 16:07 (12), 01/14/2026 15:17 (28)
Complete: 🔍
Cache ID: 216::103

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