What is the CVSS score of CVE-2021-24016?

CVE-2021-24016 has a CVSS 3.1 base score of 6.3 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.5%.

Fortimanager CVE-2021-24016

MEDIUM

Improper Neutralization of Formula Elements in a CSV File (CWE-1236)

2021-09-30 psirt@fortinet.com

Information Disclosure Fortinet Fortimanager

6.3

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-1236 ASVS 5.0 V1 - Encoding and Sanitization CSV injection prevention
Impact	CVSS score of 6.3 (MEDIUM). Attack characteristics: local attack vector, high complexity, high privileges required, user interaction required.
Exploit ScenarioDerived	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 0.5% exploitation probability (EPSS)

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AnalysisAI

An improper neutralization of formula elements in a csv file in Fortinet FortiManager version 6.4.3 and below, 6.2.7 and below allows attacker to execute arbitrary commands via crafted IPv4 field in. Rated medium severity (CVSS 6.3). 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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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-1236. An improper neutralization of formula elements in a csv file in Fortinet FortiManager version 6.4.3 and below, 6.2.7 and below allows attacker to execute arbitrary commands via crafted IPv4 field in policy name, when exported as excel file and opened unsafely on the victim host. Affected products include: Fortinet Fortimanager. Version information: version 6.4.3.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.3 MEDIUM

AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

High

Privileges Required

High

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

An improper neutralization of formula elements in a csv file in Fortinet FortiManager version 6.4.3 and below, 6.2.7 and below allows attacker to execute arbitrary commands via crafted IPv4 field in policy name, when exported as excel file and opened unsafely on the victim host.

Threat Intelligence Overview

EPSS Score

0.5%

Top 61% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

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 0.5%

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

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +32

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.