How severe is CVE-2023-42782?

CVE-2023-42782 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-42782 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-42782?

CVE-2023-42782 primarily affects Fortinet Fortianalyzer. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-42782?

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

When was CVE-2023-42782 published?

CVE-2023-42782 was published on 2023-10-10 and last updated on 2026-06-17.

CVE-2023-42782

CVE-2023-42782 is a medium-severity vulnerability in Fortinet Fortianalyzer with a CVSS 3.x base score of 5.3. 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-345.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: Fortinet Fortianalyzer
Published: 2023-10-10
Last modified: 2026-06-17

Description

A insufficient verification of data authenticity vulnerability [CWE-345] in FortiAnalyzer version 7.4.0 and below 7.2.3 allows a remote unauthenticated attacker to send messages to the syslog server of FortiAnalyzer via the knoweldge of an authorized device serial number.

Frequently asked questions

What is CVE-2023-42782?: A insufficient verification of data authenticity vulnerability [CWE-345] in FortiAnalyzer version 7.4.0 and below 7.2.3 allows a remote unauthenticated attacker to send messages to the syslog server of FortiAnalyzer via the knoweldge of an authorized device serial number.
How severe is CVE-2023-42782?: CVE-2023-42782 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-42782 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-42782?: CVE-2023-42782 primarily affects Fortinet Fortianalyzer. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-42782?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-42782 published?: CVE-2023-42782 was published on 2023-10-10 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-23-221

Affected products (2)

cpe:2.3:a:fortinet:fortianalyzer:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortianalyzer:7.4.0:*:*:*:*:*:*:*

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