VDB-315393 · CVE-2024-52965 · FG-IR-24-511

Fortinet FortiOS/FortiProxy API critical step in authentication

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Fortinet FortiOS and FortiProxy. Affected by this issue is some unknown functionality of the component API. Performing a manipulation results in critical step in authentication. This vulnerability was named CVE-2024-52965. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Fortinet FortiOS and FortiProxy (affected version unknown). It has been classified as critical. This affects an unknown functionality of the component API. The manipulation with an unknown input leads to a critical step in authentication vulnerability. CWE is classifying the issue as CWE-304. The product implements an authentication technique, but it skips a step that weakens the technique. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A missing critical step in authentication vulnerability [CWE-304] in Fortinet FortiOS version 7.6.0 through 7.6.1, 7.4.0 through 7.4.5, 7.2.0 through 7.2.10, and before 7.0.16 & FortiProxy version 7.6.0 through 7.6.1, 7.4.0 through 7.4.8, 7.2.0 through 7.2.13 and before 7.0.20 allows an API-user using api-key + PKI user certificate authentication to login even if the certificate is invalid.

The advisory is shared at fortiguard.fortinet.com. This vulnerability is uniquely identified as CVE-2024-52965 since 11/18/2024. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are necessary for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 241530 (Fortinet Fortigate PKI via API: Authentication granted with an invalid certificate (FG-IR-24-511)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (241530) and EUVD (EUVD-2024-54757). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Firewall Software

Vendor

Fortinet

Name

License

commercial

Website

Vendor: https://www.fortinet.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.2
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.2
CNA Vector (fortinet): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Critical step in authentication
CWE: CWE-304
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 241530
Nessus Name: Fortinet Fortigate PKI via API: Authentication granted with an invalid certificate (FG-IR-24-511)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/18/2024 🔍
07/08/2025 +231 days 🔍
07/08/2025 +0 days 🔍
07/23/2025 +14 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-24-511
Status: Confirmed

CVE: CVE-2024-52965 (🔍)
GCVE (CVE): GCVE-0-2024-52965
GCVE (VulDB): GCVE-100-315393
EUVD: 🔍

Entryinfo

Created: 07/08/2025 17:22
Updated: 07/23/2025 00:57
Changes: 07/08/2025 17:22 (63), 07/09/2025 00:26 (1), 07/09/2025 11:53 (2), 07/23/2025 00:57 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.