How severe is CVE-2023-42783?

CVE-2023-42783 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-42783 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-42783?

CVE-2023-42783 primarily affects Fortinet Fortiwlm. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-42783?

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-2023-42783 published?

CVE-2023-42783 was published on 2023-11-14 and last updated on 2026-06-17.

CVE-2023-42783

CVE-2023-42783 is a high-severity vulnerability in Fortinet Fortiwlm with a CVSS 3.x base score of 7.5. 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-23.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-23
Affected product: Fortinet Fortiwlm
Published: 2023-11-14
Last modified: 2026-06-17

Description

A relative path traversal in Fortinet FortiWLM version 8.6.0 through 8.6.5 and 8.5.0 through 8.5.4 and 8.4.2 through 8.4.0 and 8.3.2 through 8.3.0 and 8.2.2 allows attacker to read arbitrary files via crafted http requests.

Frequently asked questions

What is CVE-2023-42783?: A relative path traversal in Fortinet FortiWLM version 8.6.0 through 8.6.5 and 8.5.0 through 8.5.4 and 8.4.2 through 8.4.0 and 8.3.2 through 8.3.0 and 8.2.2 allows attacker to read arbitrary files via crafted http requests.
How severe is CVE-2023-42783?: CVE-2023-42783 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-42783 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-42783?: CVE-2023-42783 primarily affects Fortinet Fortiwlm. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-42783?: 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-2023-42783 published?: CVE-2023-42783 was published on 2023-11-14 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-23-143

Affected products (8)

cpe:2.3:a:fortinet:fortiwlm:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.2.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.3.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.3.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.3.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.4.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiwlm:8.4.2:*:*:*:*:*:*:*

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