How severe is CVE-2023-45590?

CVE-2023-45590 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-45590 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45590?

CVE-2023-45590 primarily affects Fortinet Forticlient. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-45590?

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

Does CVE-2023-45590 have an EU (EUVD) identifier?

Yes. CVE-2023-45590 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49882.

When was CVE-2023-45590 published?

CVE-2023-45590 was published on 2024-04-09 and last updated on 2026-06-17.

CVE-2023-45590

CVE-2023-45590 is a critical-severity vulnerability in Fortinet Forticlient with a CVSS 3.x base score of 9.6. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-49882
Weakness: CWE-94
Affected product: Fortinet Forticlient
Published: 2024-04-09
Last modified: 2026-06-17

Description

An improper control of generation of code ('code injection') in Fortinet FortiClientLinux version 7.2.0, 7.0.6 through 7.0.10 and 7.0.3 through 7.0.4 allows attacker to execute unauthorized code or commands via tricking a FortiClientLinux user into visiting a malicious website

Frequently asked questions

What is CVE-2023-45590?: An improper control of generation of code ('code injection') in Fortinet FortiClientLinux version 7.2.0, 7.0.6 through 7.0.10 and 7.0.3 through 7.0.4 allows attacker to execute unauthorized code or commands via tricking a FortiClientLinux user into visiting a malicious website
How severe is CVE-2023-45590?: CVE-2023-45590 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-45590 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45590?: CVE-2023-45590 primarily affects Fortinet Forticlient. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-45590?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2023-45590 have an EU (EUVD) identifier?: Yes. CVE-2023-45590 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49882.
When was CVE-2023-45590 published?: CVE-2023-45590 was published on 2024-04-09 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-23-087

Affected products (4)

cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:linux:*:*
cpe:2.3:a:fortinet:forticlient:7.0.3:*:*:*:*:linux:*:*
cpe:2.3:a:fortinet:forticlient:7.0.4:*:*:*:*:linux:*:*
cpe:2.3:a:fortinet:forticlient:7.2.0:*:*:*:*:linux:*:*

More vulnerabilities in Fortinet Forticlient

CVE-2019-17658 — Critical (CVSS 9.8): An unquoted service path vulnerability in the FortiClient FortiTray component of FortiClientWindows v6.2.2 and prior…
CVE-2020-15934 — High (CVSS 8.8): An execution with unnecessary privileges vulnerability in the VCM engine of FortiClient for Linux versions 6.2.7 and…
CVE-2017-14184 — High (CVSS 8.8): An Information Disclosure vulnerability in Fortinet FortiClient for Windows 5.6.0 and below versions, FortiClient for…
CVE-2016-8493 — High (CVSS 8.8): In FortiClientWindows 5.4.1 and 5.4.2, an attacker may escalate privilege via a FortiClientNamedPipe vulnerability.
CVE-2021-43066 — High (CVSS 8.4): A external control of file name or path in Fortinet FortiClientWindows version 7.0.2 and below, version 6.4.6 and…
CVE-2023-45588 — High (CVSS 8.2): An external control of file name or path vulnerability [CWE-73] in FortiClientMac version 7.2.3 and below, version…

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CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.

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