Is CVE-2021-24008 in the CISA KEV catalog?

No. CVE-2021-24008 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-24008?

CVE-2021-24008 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-24008?

CVE-2021-24008 has an EPSS score of 0.48% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-24008?

Upgrade fortiddos to 5.4.3 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-24008

MEDIUM

5.3

CVSS v3

NVD

Description

An exposure of sensitive system information to an unauthorized control sphere vulnerability [CWE-497] in FortiDDoS version 5.4.0, version 5.3.2 and below, version 5.2.0, version 5.1.0, version 5.0.0, version 4.7.0, version 4.6.0, version 4.5.0, version 4.4.2 and below, FortiDDoS-CM version 5.3.0, version 5.2.0, version 5.1.0, version 5.0.0, version 4.7.0, FortiVoice version 6.0.6 and below, FortiRecorder version 6.0.3 and below and FortiMail version 6.4.1 and below, version 6.2.4 and below, version 6.0.9 and below may allow a remote, unauthenticated attacker to obtain potentially sensitive software-version information by reading a JavaScript file.

CWE-200Information Exposure

How to fix

Remediation Available

fortiddosNVD

Affected:>= 4.4.0, < 5.4.3Fixed in:5.4.3CVE-2021-24008derived from NVD

fortimailNVD

Affected:>= 6.4.0, < 6.4.2Fixed in:6.4.2CVE-2021-24008derived from NVD

fortirecorderNVD

Affected:>= 6.0.0, < 6.0.4Fixed in:6.0.4CVE-2021-24008derived from NVD

fortivoiceNVD

Affected:>= 6.0.0, < 6.0.7Fixed in:6.0.7CVE-2021-24008derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.48%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Vendor Advisory1

fortiguard.fortinet.com

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-07-24.