CVE-2021-22127

highpriority · track · 32EPSS 0.005 · 43 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.51% (43rd) EPSS

CVSS 7.9 · high

Is it mine?

3 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

An improper input validation vulnerability in FortiClient for Linux 6.4.x before 6.4.3, FortiClient for Linux 6.2.x before 6.2.9 may allow an unauthenticated attacker to execute arbitrary code on the host operating system as root via tricking the user into connecting to a network with a malicious name.

cvss

Technical severity, 0–10. One row per scoring source.

8.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.9highAV:A/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 5.5 · impact 10

v3.18highCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.1 · impact 5.9

v3.17.1highCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:X/RC:Xsecondary · ENISA EU

v3.17.1highCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · psirt@fortinet.comexploitability 1.2 · impact 5.9

v3.17.3highCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimary

affected products (3)

Products and version ranges known to be affected.

Fortinet Fortinet FortiClientLinux≤ FortiClientLinux 6.4.2 and below, FortiClientLinux 6.2.8 and belowenisa_euvdEU
fortinet forticlient< 6.2.9nvdUScpe:2.3:a:fortinet:forticlient:*:*:*:*:*:*:*:*
fortinet forticlient6.4.0 → 6.4.3nvdUScpe:2.3:a:fortinet:forticlient:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2022-04-06modified 2026-06-17

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references (9)

External citations — patches, advisories, analysis.

scry

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