CVE-2020-9291

mediumpriority · track · 31EPSS 0.005 · 45 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.53% (45th) EPSS

CVSS 4.6 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

An Insecure Temporary File vulnerability in FortiClient for Windows 6.2.1 and below may allow a local user to gain elevated privileges via exhausting the pool of temporary file names combined with a symbolic link attack.

cvss

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

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–7.8

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.3mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondary · ENISA EU

v3.16.3mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondary · psirt@fortinet.comexploitability 2.8 · impact 3.4

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-668USprimaryCWE-337USCWE-668US

affected products (4)

Products and version ranges known to be affected.

Fortinet Fortinet FortiClient for Windows≤ FortiClient for Windows 6.2.1 and earlier and FortiClient for Windows 6.0.9 and earlierenisa_euvdEU
Fortinet Inc. FortiClient Windows≤ 6.2.2fstec_bduRU
fortinet forticlient≤ 6.0.9nvdUScpe:2.3:a:fortinet:forticlient:*:*:*:*:*:*:*:*
fortinet forticlient6.2.0 → 6.2.1nvdUScpe:2.3:a:fortinet:forticlient:*:*:*:*:*:*:*:*

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2020-06-01modified 2026-06-17

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+944 more

references (9)

External citations — patches, advisories, analysis.

scry

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