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Fortios CVE-2024-33510

MEDIUM
Improperly Implemented Security Check for Standard (CWE-358)
2024-11-12 psirt@fortinet.com
4.3
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V12 - Secure Communication Improperly implemented security check
Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAI

An improper neutralization of special elements in output used by a downstream component ('Injection') vulnerability [CWE-74] in FortiOS version 7.4.3 and below, version 7.2.8 and below, version. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-358. An improper neutralization of special elements in output used by a downstream component ('Injection') vulnerability [CWE-74] in FortiOS version 7.4.3 and below, version 7.2.8 and below, version 7.0.16 and below; FortiProxy version 7.4.3 and below, version 7.2.9 and below, version 7.0.16 and below; FortiSASE version 24.2.b SSL-VPN web user interface may allow a remote unauthenticated attacker to perform phishing attempts via crafted requests. Affected products include: Fortinet Fortiproxy, Fortinet Fortios. Version information: version 7.4.3.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

DescriptionNVD

An improper neutralization of special elements in output used by a downstream component ('Injection') vulnerability [CWE-74] in FortiOS version 7.4.3 and below, version 7.2.8 and below, version 7.0.16 and below; FortiProxy version 7.4.3 and below, version 7.2.9 and below, version 7.0.16 and below; FortiSASE version 24.2.b SSL-VPN web user interface may allow a remote unauthenticated attacker to perform phishing attempts via crafted requests.

Threat Intelligence Overview

EPSS Score
0.6%
Top 57% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.6%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Affected Products (CPE)NVD

cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
CVE-2022-40684 CRITICAL POC
9.8 Oct 18

An authentication bypass using an alternate path or channel [CWE-288] in Fortinet FortiOS version 7.2.0 through 7.2.1 an

CVE-2024-55591 CRITICAL POC
9.8 Jan 14

FortiOS and FortiProxy contain an authentication bypass via the Node.js websocket module allowing unauthenticated remote

CVE-2024-21762 CRITICAL POC
9.8 Feb 09

A out-of-bounds write in Fortinet FortiOS versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.6, 7.0.0 through 7.0.13, 6.4.0

CVE-2023-27997 CRITICAL
9.8 Jun 13

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, versi

CVE-2020-12812 CRITICAL
9.8 Jul 24

FortiOS SSL-VPN contains an improper authentication vulnerability that allows users to bypass two-factor authentication

CVE-2016-1909 CRITICAL POC
9.8 Jan 15

Fortinet FortiAnalyzer before 5.0.12 and 5.2.x before 5.2.5; FortiSwitch 3.3.x before 3.3.3; FortiCache 3.0.x before 3.0

CVE-2016-6909 CRITICAL POC
9.8 Aug 24

Buffer overflow in the Cookie parser in Fortinet FortiOS 4.x before 4.1.11, 4.2.x before 4.2.13, and 4.3.x before 4.3.9

CVE-2025-25249 CRITICAL POC
9.8 Jan 13

Remote code execution in Fortinet FortiOS (6.4 through 7.6.3) and FortiSwitchManager (7.0.x/7.2.x) lets an attacker run

CVE-2025-61624 MEDIUM POC
6.5 Apr 14

Path traversal vulnerability in Fortinet FortiOS, FortiProxy, FortiPAM, and FortiSwitchManager allows authenticated admi

CVE-2015-1880 MEDIUM POC
4.3 May 12

Cross-site scripting (XSS) vulnerability in the sslvpn login page in Fortinet FortiOS 5.2.x before 5.2.3 allows remote a

CVE-2025-24472 HIGH
8.1 Feb 11

FortiOS and FortiProxy contain an authentication bypass allowing unauthenticated attackers with knowledge of upstream/do

CVE-2025-68686 MEDIUM POC
5.9 Feb 10

An Exposure of Sensitive Information to an Unauthorized Actor vulnerability [CWE-200] vulnerability in Fortinet FortiOS

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