How severe is CVE-2023-33302?

CVE-2023-33302 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-33302 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-33302?

CVE-2023-33302 primarily affects Fortinet Fortimail. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-33302?

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

Does CVE-2023-33302 have an EU (EUVD) identifier?

Yes. CVE-2023-33302 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-37465.

When was CVE-2023-33302 published?

CVE-2023-33302 was published on 2025-03-31 and last updated on 2026-06-17.

CVE-2023-33302

CVE-2023-33302 is a medium-severity vulnerability in Fortinet Fortimail with a CVSS 3.x base score of 4.7. 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-37465
Weakness: CWE-120
Affected product: Fortinet Fortimail
Published: 2025-03-31
Last modified: 2026-06-17

Description

A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version 6.4.0 through 6.4.4 and before 6.2.6 and FortiNDR administrative interface version 7.2.0 and before 7.1.0 allows an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.

Frequently asked questions

What is CVE-2023-33302?: A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version 6.4.0 through 6.4.4 and before 6.2.6 and FortiNDR administrative interface version 7.2.0 and before 7.1.0 allows an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.
How severe is CVE-2023-33302?: CVE-2023-33302 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-33302 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-33302?: CVE-2023-33302 primarily affects Fortinet Fortimail. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-33302?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-33302 have an EU (EUVD) identifier?: Yes. CVE-2023-33302 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-37465.
When was CVE-2023-33302 published?: CVE-2023-33302 was published on 2025-03-31 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-21-023

Affected products (2)

cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortindr:*:*:*:*:*:*:*:*

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