How severe is CVE-2021-24022?

CVE-2021-24022 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24022 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24022?

CVE-2021-24022 primarily affects Fortinet Fortianalyzer. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-24022?

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

When was CVE-2021-24022 published?

CVE-2021-24022 was published on 2021-07-20 and last updated on 2026-06-17.

CVE-2021-24022

CVE-2021-24022 is a medium-severity vulnerability in Fortinet Fortianalyzer with a CVSS 3.x base score of 6.7. 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 2.1
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Fortinet Fortianalyzer
Published: 2021-07-20
Last modified: 2026-06-17

Description

A buffer overflow vulnerability in FortiAnalyzer CLI 6.4.5 and below, 6.2.7 and below, 6.0.x and FortiManager CLI 6.4.5 and below, 6.2.7 and below, 6.0.x may allow an authenticated, local attacker to perform a Denial of Service attack by running the `diagnose system geoip-city` command with a large ip value.

Frequently asked questions

What is CVE-2021-24022?: A buffer overflow vulnerability in FortiAnalyzer CLI 6.4.5 and below, 6.2.7 and below, 6.0.x and FortiManager CLI 6.4.5 and below, 6.2.7 and below, 6.0.x may allow an authenticated, local attacker to perform a Denial of Service attack by running the `diagnose system geoip-city` command with a large ip value.
How severe is CVE-2021-24022?: CVE-2021-24022 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24022 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24022?: CVE-2021-24022 primarily affects Fortinet Fortianalyzer. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-24022?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24022 published?: CVE-2021-24022 was published on 2021-07-20 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-20-194

Affected products (2)

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

More vulnerabilities in Fortinet Fortianalyzer

CVE-2026-24858 — Critical (CVSS 9.8): An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet…
CVE-2023-25610 — Critical (CVSS 9.8): A buffer underwrite ('buffer underflow') vulnerability in the administrative interface of Fortinet FortiOS version…
CVE-2024-48886 — Critical (CVSS 9.0): A weak authentication in Fortinet FortiOS versions 7.4.0 through 7.4.4, 7.2.0 through 7.2.8, 7.0.0 through 7.0.15,…
CVE-2021-32603 — High (CVSS 8.8): A server-side request forgery (SSRF) (CWE-918) vulnerability in FortiManager and FortiAnalyser GUI 7.0.0, 6.4.5 and…
CVE-2020-12817 — High (CVSS 8.8): An improper neutralization of input vulnerability in FortiAnalyzer before 6.4.1 and 6.2.5 may allow a remote…
CVE-2021-32589 — High (CVSS 8.1): A Use After Free (CWE-416) vulnerability in FortiManager version 7.0.0, version 6.4.5 and below, version 6.2.7 and…

All CVEs affecting Fortinet Fortianalyzer →

Other CWE-120 (Classic Buffer Overflow) vulnerabilities

CVE-2025-48611 — Critical (CVSS 10.0): In DeviceId of DeviceId.java, there is a possible desync in persistence due to a missing bounds check. This could lead…
CVE-2026-24823 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT…
CVE-2026-24810 — Critical (CVSS 10.0): Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in rethinkdb (src/cjson modules).…
CVE-2026-24800 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow…
CVE-2025-9962 — Critical (CVSS 10.0): A buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior…
CVE-2010-10016 — Critical (CVSS 10.0): BS.Player version 2.57 (build 1051) contains a vulnerability in its playlist import functionality. When processing .m3u…

Browse all CWE-120 (Classic Buffer Overflow) vulnerabilities →