How severe is CVE-2020-9291?

CVE-2020-9291 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-9291 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9291?

CVE-2020-9291 affects Fortinet Forticlient. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-9291?

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

When was CVE-2020-9291 published?

CVE-2020-9291 was published on 2020-06-01 and last updated on 2026-06-17.

CVE-2020-9291

CVE-2020-9291 is a medium-severity vulnerability in Fortinet Forticlient with a CVSS 3.x base score of 6.3. 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-668.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 4.6
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Fortinet Forticlient
Published: 2020-06-01
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2020-9291?: 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.
How severe is CVE-2020-9291?: CVE-2020-9291 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-9291 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9291?: CVE-2020-9291 affects Fortinet Forticlient. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-9291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-9291 published?: CVE-2020-9291 was published on 2020-06-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:*

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