How severe is CVE-2021-24017?

CVE-2021-24017 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2021-24017 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24017?

CVE-2021-24017 affects Fortinet Fortimanager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24017?

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

When was CVE-2021-24017 published?

CVE-2021-24017 was published on 2021-09-30 and last updated on 2026-06-17.

CVE-2021-24017

CVE-2021-24017 is a medium-severity vulnerability in Fortinet Fortimanager with a CVSS 3.x base score of 5.4. 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 4.0
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Fortinet Fortimanager
Published: 2021-09-30
Last modified: 2026-06-17

Description

An improper authentication in Fortinet FortiManager version 6.4.3 and below, 6.2.6 and below allows attacker to assign arbitrary Policy and Object modules via crafted requests to the request handler.

Frequently asked questions

What is CVE-2021-24017?: An improper authentication in Fortinet FortiManager version 6.4.3 and below, 6.2.6 and below allows attacker to assign arbitrary Policy and Object modules via crafted requests to the request handler.
How severe is CVE-2021-24017?: CVE-2021-24017 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2021-24017 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24017?: CVE-2021-24017 affects Fortinet Fortimanager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24017?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24017 published?: CVE-2021-24017 was published on 2021-09-30 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-20-189

Affected products (1)

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

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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →