How severe is CVE-2021-24016?

CVE-2021-24016 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over an adjacent network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24016 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24016?

CVE-2021-24016 affects Fortinet Fortimanager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24016?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-24016 published?

CVE-2021-24016 was published on 2021-09-30 and last updated on 2026-06-17.

CVE-2021-24016

CVE-2021-24016 is a low-severity vulnerability in Fortinet Fortimanager with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1236.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
CVSS v2: 9.3
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1236
Affected product: Fortinet Fortimanager
Published: 2021-09-30
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-24016?: 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.
How severe is CVE-2021-24016?: CVE-2021-24016 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over an adjacent network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24016 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24016?: CVE-2021-24016 affects Fortinet Fortimanager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24016?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24016 published?: CVE-2021-24016 was published on 2021-09-30 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-20-190

Affected products (1)

cpe:2.3:a:fortinet:fortimanager:*:*:*:*:*:*:*:*

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