How severe is CVE-2022-33877?

CVE-2022-33877 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-33877 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-2022-33877?

CVE-2022-33877 primarily affects Fortinet Forticlient. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-33877?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-33877 published?

CVE-2022-33877 was published on 2023-06-13 and last updated on 2026-06-17.

CVE-2022-33877

CVE-2022-33877 is a high-severity vulnerability in Fortinet Forticlient with a CVSS 3.x base score of 7.0. 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-276.

Key facts

Severity: High (CVSS 3.x base score 7.0)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Fortinet Forticlient
Published: 2023-06-13
Last modified: 2026-06-17

Description

An incorrect default permission [CWE-276] vulnerability in FortiClient (Windows) versions 7.0.0 through 7.0.6 and 6.4.0 through 6.4.8 and FortiConverter (Windows) versions 6.2.0 through 6.2.1, 7.0.0 and all versions of 6.0.0 may allow a local authenticated attacker to tamper with files in the installation folder, if FortiClient or FortiConverter is installed in an insecure folder.

Frequently asked questions

What is CVE-2022-33877?: An incorrect default permission [CWE-276] vulnerability in FortiClient (Windows) versions 7.0.0 through 7.0.6 and 6.4.0 through 6.4.8 and FortiConverter (Windows) versions 6.2.0 through 6.2.1, 7.0.0 and all versions of 6.0.0 may allow a local authenticated attacker to tamper with files in the installation folder, if FortiClient or FortiConverter is installed in an insecure folder.
How severe is CVE-2022-33877?: CVE-2022-33877 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-33877 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-2022-33877?: CVE-2022-33877 primarily affects Fortinet Forticlient. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-33877?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-33877 published?: CVE-2022-33877 was published on 2023-06-13 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-22-229

Affected products (5)

cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:*
cpe:2.3:a:fortinet:forticonverter:*:*:*:*:*:windows:*:*
cpe:2.3:a:fortinet:forticonverter:6.2.0:*:*:*:*:windows:*:*
cpe:2.3:a:fortinet:forticonverter:6.2.1:*:*:*:*:windows:*:*
cpe:2.3:a:fortinet:forticonverter:7.0.0:*:*:*:*:windows:*:*

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